WO2003071614A2 - Silver-selenide/chalcogenide glass stack for resistance variable memory - Google Patents
Silver-selenide/chalcogenide glass stack for resistance variable memory Download PDFInfo
- Publication number
- WO2003071614A2 WO2003071614A2 PCT/US2003/004385 US0304385W WO03071614A2 WO 2003071614 A2 WO2003071614 A2 WO 2003071614A2 US 0304385 W US0304385 W US 0304385W WO 03071614 A2 WO03071614 A2 WO 03071614A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- memory element
- layers
- metal containing
- silver
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body
- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/0002—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements
- G11C13/0009—RRAM elements whose operation depends upon chemical change
- G11C13/0011—RRAM elements whose operation depends upon chemical change comprising conductive bridging RAM [CBRAM] or programming metallization cells [PMCs]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/021—Formation of the switching material, e.g. layer deposition
- H10N70/023—Formation of the switching material, e.g. layer deposition by chemical vapor deposition, e.g. MOCVD, ALD
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/021—Formation of the switching material, e.g. layer deposition
- H10N70/026—Formation of the switching material, e.g. layer deposition by physical vapor deposition, e.g. sputtering
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
- H10N70/24—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies
- H10N70/245—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies the species being metal cations, e.g. programmable metallization cells
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/821—Device geometry
- H10N70/826—Device geometry adapted for essentially vertical current flow, e.g. sandwich or pillar type devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/882—Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
- H10N70/8825—Selenides, e.g. GeSe
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/50—Resistive cell structure aspects
- G11C2213/51—Structure including a barrier layer preventing or limiting migration, diffusion of ions or charges or formation of electrolytes near an electrode
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/50—Resistive cell structure aspects
- G11C2213/56—Structure including two electrodes, a memory active layer and a so called passive or source or reservoir layer which is NOT an electrode, wherein the passive or source or reservoir layer is a source of ions which migrate afterwards in the memory active layer to be only trapped there, to form conductive filaments there or to react with the material of the memory active layer in redox way
Definitions
- the invention relates to the field of random access memory (RAM) devices formed using a resistance variable material, and in particular to a resistance variable memory element formed using chalcogenide glass.
- RAM random access memory
- a well known semiconductor component is semiconductor memory, such as a random access memory (RAM).
- RAM permits repeated read and write operations on memory elements.
- BAM devices are volatile, in that ⁇ stored data is lost once the power source is disconnected or removed.
- Non-limiting examples of BAM devices include dynamic random access memory (DRAM), synchronized dynamic random access memory (SDRAM) and static random access memory (SRAM).
- DRAM dynamic random access memory
- SDRAM synchronized dynamic random access memory
- SRAM static random access memory
- DRAMS and SDRAMS also typically store data in capacitors which require periodic refreshing to maintain the stored data.
- a write operation to a low resistance state is performed by applying a voltage potential across the two electrodes.
- the mechanism by which the resistance of the element is changed is not fully understood.
- the conductively-doped dielectric material undergoes a structural change at a certain applied voltage with the growth of a conductive dendrite or filament between the electrodes effectively interconnecting the two electrodes and setting the memory element in a low resistance state.
- the dendrite is thought to grow through the resistance variable material in a path of least resistance.
- the low resistance state will remain intact for days or weeks after the voltage potentials are removed.
- Such material can be returned to its high resistance state by applying a reverse voltage potential between the electrodes of at least the same order of magnitude as used to write the element to the low resistance state. " Again, the highly resistive state is maintained once the voltage potential is removed. This way, such a device can function, for example, as a resistance variable memory element having two resistance states, which can define two logic states.
- One preferred resistance variable material comprises a chalcogenide glass.
- a specific example is germanium-selenide (Ge x Se 100.x ) comprising silver (Ag).
- One method of providing silver to the germanium-selenide composition is to initially form a germanium-selenide glass and then deposit a thin layer of silver upon the glass, for example by sputtering, physical vapor deposition, or other known techniques in the art.
- the layer of silver is irradiated, preferably with electromagnetic energy at a wavelength less than 600 nanometers, so that the energy passes through the silver and to the silver/glass interface, to break a chalcogenide bond of the chalcogenide material such that the glass is doped or photodoped with silver.
- Silver may also be provided to the glass by processing the glass with silver, as in the case of a silver-germanium-selenide glass.
- Another method for providing metal to the glass is to provide a layer of silver-selenide on a germanium-selenide glass.
- the element undergoes thermal cycling or heat processing.
- Heat processing can result in substantial amounts of silver migrating into the memory element uncontrollably. Too much silver incorporated into the memory element may result in faster degradation, i.e., a short life, and eventually device failure.
- the invention provides a resistance variable memory element and a method of forming the resistance variable memory element in which a metal containing layer is formed between a first chalcogenide glass layer and a second glass layer.
- a metal containing layer is formed between a first chalcogenide glass layer and a second glass layer.
- One or both of the glass layers may be doped with a metal and one or more metal containing layers may be provided between the glass layers.
- the invention provides a memory element and a method of forming the memory element in which at least one layer of silver-selenide is formed between a first chalcogenide glass layer and a second glass layer.
- the second glass layer may also be a chalcogenide glass layer.
- the stack of layers comprising a first chalcogenide glass, a silver-selenide layer, and a second glass layer are formed between two conductive layers or electrodes.
- the stack of layers may contain more than one silver-selenide layer between the chalcogenide glass layer and the second glass layer.
- the first chalcogenide glass layer may contain multiple chalcogenide glass layers and the second glass layer may contain multiple glass layers.
- the stack of layers may contain one or more silver selenide layers in serial contact with each other formed between a multi-layered chalcogenide glass layer and a multi-layered second glass layer.
- one or more of each of the first chalcogenide glass layers and the second glass layers may contain a metal dopant, for example, a silver dopant.
- the invention provides a memory element and a method of forming a memory element comprising a plurality of alternating layers of chalcogenide glass and metal containing layers, whereby the layers start with a first chlacogenide glass layer and end with a last chalcogenide glass layer, with the first chalcogenide glass layer contacting a first electrode and the last chalcogenide glass layer contacting a second electrode.
- the plurality of alternating layers of chalcogenide glass layers and metal containing layers are stacked between two electrodes.
- the metal containing layers preferably comprises a silver- chalcogenide, such as silver-selenide.
- the metal containing layers may each contain a plurality of metal containing layers.
- the chalcogenide glass layers may each contain a plurality of chalcogenide glass layers.
- one or more of the chalcogenide glass layers may contain a metal dopant, for example, a silver dopant.
- FIG. 1 illustrates a cross-sectional view of a memory element fabricated in accordance with a first embodiment of the invention and at an initial stage of processing.
- FIG. 2 illustrates a cross-sectional view of the memory element of
- FIG. 1 at a stage of processing subsequent to that shown in FIG. 1.
- FIG. 3 illustrates a cross-sectional view of the memory element of
- FIG. 1 at a stage of processing subsequent to that shown in FIG. 2.
- FIG. 4 illustrates a cross-sectional view of the memory element of
- FIG. 1 at a stage of processing subsequent to that shown in FIG. 3.
- FIG. 5 illustrates a cross-sectional view of the memory element of
- FIG. 1 at a stage of processing subsequent to that shown in FIG. 4.
- FIG. 6 illustrates a cross-sectional view of the memory element of
- FIG. 1 at a stage of processing subsequent to that shown in FIG. 5.
- FIG. 7 illustrates a cross-sectional view of the memory element of
- FIG. 1 at a stage of processing subsequent to that shown in FIG. 6.
- FIG. 8 illustrates a cross-sectional view of the memory element of
- FIG. 1 in accordance with a variation of the first embodiment of the invention at a stage of processing subsequent to that shown in FIG. 4.
- FIG. 9 illustrates a cross-sectional view of a second embodiment of the memory element of the invention at a stage of processing subsequent to that shown in FIG. 4.
- FIG. 10 illustrates a cross-sectional view of a variation of the second embodiment of the memory element of the invention at a stage of processing subsequent to that shown in FIG. 4.
- FIG. 11 illustrates a computer system having a memory element formed according to the invention.
- substrate used in the following description may include any supporting structure including but not limited to a semiconductor substrate that has an exposed substrate surface.
- a semiconductor substrate should be understood to include silicon-on-insulator (SOI), silicon-on-sapphire (SOS), doped and undoped semiconductors, epitaxial layers of silicon supported by a base semiconductor foundation, and other semiconductor structures.
- SOI silicon-on-insulator
- SOS silicon-on-sapphire
- doped and undoped semiconductors silicon-on-insulator
- epitaxial layers of silicon supported by a base semiconductor foundation and other semiconductor structures.
- silver is intended to include not only elemental silver, but silver with other trace metals or in various alloyed combinations with other metals as known in the semiconductor industry, as long as such silver alloy is conductive, and as long as the physical and electrical properties of the silver remain unchanged.
- silver-selenide is intended to include various species of silver-selenide, including some species which have a slight excess or deficit of silver, for instance, Ag 2 Se, Ag 2+x Se, and Ag 2 . x Se.
- semi-volatile memory is intended to include any memory device or element which is capable of maintaining its memory state after power is removed from the device for a prolonged period of time.
- semi- volatile memory devices are capable of retaining stored data after the power source is disconnected or removed.
- the term “semi-volatile memory” is also intended to include not only semi-volatile memory devices, but also non-volatile memory devices.
- resistance variable material is intended to include chalcogenide glasses, and chalcogenide glasses comprising a metal, such as silver.
- resistance variable material includes silver doped chalcogenide glasses, silver-germanium-selenide glasses, and chalcogenide glass comprising a silver selenide layer.
- resistance variable memory element is intended to include any memory element, including programmable conductor memory elements, semi-volatile memory elements, and non-volatile memory elements which exhibit a resistance change in response to an applied voltage.
- chalcogenide glass is intended to include glasses that comprise an element from group " VTA (or group 16) of the periodic table.
- Group VIA elements also referred to as chalcogens, include sulfur (S), selenium (Se), tellurium (Te), polonium (Po), and oxygen (O).
- FIG. 1 depicts a portion of an insulating layer 12 formed over a semiconductor substrate 10, for example, a silicon substrate.
- the resistance variable memory element can be formed on a variety of substrate materials and not just semiconductor substrates such as silicon.
- the insulating layer 12 may be formed on a plastic substrate.
- the insulating layer 12 may be formed by any known deposition methods, such as sputtering by chemical vapor deposition (CVD), plasma enhanced CVD (PECVD) or physical vapor deposition (PVD).
- the insulating layer 12 may be formed of a conventional insulating oxide, such as silicon oxide (Si0 2 ), a silicon nitride (Si 3 N 4 ), or a low dielectric constant material, among many others.
- a first electrode 14 is next formed over the insulating layer 12, as also illustrated in FIG. 1.
- the first electrode 14 may comprise any conductive material, for example, tungsten, nickel, tantalum, aluminum, platinum, or silver, among many others.
- a first dielectric layer 15 is next formed over the first electrode 14.
- the first dielectric layer 15 may comprise the same or different materials as those described above with reference to the insulating layer 12.
- an opening 13 extending to the first electrode 14 is formed in the first dielectric layer 15.
- the opening 13 may be formed by known methods in the art, for example, by a conventional patterning and etching process.
- a first chalcogenide glass layer 17 is next formed over the first dielectric layer 15, to fill in the opening 13, as shown in FIG. 3.
- the first chalcogenide glass layer 17 is a germanium-selenide glass having a Ge x Se 100 . x stoichiometry. The preferred stoichiometric range is between about Ge 20 Se 80 to about Ge 43 Se 57 and is more preferably about Ge 40 Se 60 .
- the first chalcogenide glass layer 17 preferably has a thickness from about 100 A to about 1000 A and is more preferably 150 A.
- the first chalcogenide glass layer acts as a glass backbone for allowing a metal containing layer, such as a silver-selenide layer, to be directly deposited thereon.
- a metal containing layer such as a silver-selenide layer
- a metal (silver) doped chalcogenide glass makes it unnecessary to provide a metal (silver) doped chalcogenide glass, which would require photodoping of the substrate with ultraviolet radiation.
- metal (silver) dope the chalcogenide glass layer which is in contact with the silver-selenide layer, as an optional variant.
- the formation of the first chalcogenide glass layer 17, having a stoichiometric composition in accordance with the invention may be accomplished by any suitable method. For instance, evaporation, co-sputtering germanium and selenium in the appropriate ratios, sputtering using a germanium-selenide target having the desired stoichiometry, or chemical vapor deposition with stoichiometric amounts of GeH 4 and SeH 2 gases (or various compositions of these gases), which result in a germanium-selenide film of the desired stoichiometry are examples of methods which may be used to form the first chalcogenide glass layer 17.
- suitable metal containing layers include silver-chalcogenide layers.
- Silver sulfide, silver oxide, and silver telluride are all suitable silver-chalcogenides that may be used in combination with any suitable chalcogenide glass layer.
- a variety of processes can be used to form the silver-selenide layer 18. For instance, physical vapor deposition techniques such as evaporative deposition and sputtering may be used. Other processes such as chemical vapor deposition, co-evaporation or depositing a layer of selenium above a layer of silver to form silver-selenide can also be used.
- the layers may be any suitable thickness.
- the thickness of the layers depend upon the mechanism for switching.
- the thickness of the layers is such that the metal containing layer is thicker than the first chalcogenide glass layer.
- the metal containing layer is also thicker than a second glass layer, described below.
- the thickness of the layers are such that a ratio of the silver-selenide layer thickness to the first chalcogenide glass layer thickness is between about 5:1 and about 1:1.
- the thickness of the silver-selenide layer is between about 1 to about 5 times greater than the thickness of the first chalcogenide glass layer.
- the ratio is between about 3.1:1 and about 2:1 silver- selenide layer thickness to first chalcogenide glass layer thickness.
- a second glass layer 20 is formed over the first silver-selenide layer 18.
- the second glass layer allows deposition of silver above the silver-selenide layer since silver cannot be directly deposited on silver-selenide. Also, it is believed that the second glass layer may prevent or regulate migration of metal, such as silver, from an electrode into the element. Accordingly, although the exact mechanism by which the second glass layer may regulate or prevent metal migration is not clearly understood, the second glass layer may act as a silver diffusion control layer.
- any suitable glass may be used, including but not limited to chalcogenide glasses.
- the second chalcogenide glass layer may, but need not, have the same stoichiometric composition as the first chalcogenide glass layer, e.g., GexSelOO-x.
- the second glass layer 20 may be of a different material, different stoichiometry, and/or more rigid than the first chalcogenide glass layer 17.
- the second glass layer 20, when used as a diffusion control layer may generally comprise any suitable glass material with the exception of SiGe and GaAs.
- Suitable glass material compositions for the second glass layer 20 include, SiSe (silicon-selenide), AsSe (arsenic-selenide, such as As 3 Se 2 ), GeS (germanium- sulfide), and combinations of Ge, Ag, and Se. Any one of the suitable glass materials may further comprise small concentrations, i.e. less than about 3%, of dopants to include nitrides, metal, and other group 13-16 elements from the periodic table.
- the thickness of the layers are such that the silver-selenide layer thickness is greater than the thickness of the second glass layer.
- a ratio of the silver-selenide layer thickness to the second glass layer thickness is between about 5:1 and about 1:1. More preferably, the ratio of the silver-selenide layer thickness to the thickness of the second glass layer is between about 3.3:1 and about 2:1 silver- selenide layer thickness to second glass layer thickness.
- the second glass layer 20 preferably has a thickness between about 100 A to about 1000 A and is more preferably 150 A.
- the formation of the second glass layer 20 may be accomplished by any suitable method. For instance, chemical vapor deposition, evaporation, co- sputtering, or sputtering using a target having the desired stoichiometry, may be used.
- the second conductive electrode material 22 is formed over the second glass layer 20.
- the second conductive electrode material 22 may comprise any electrically conductive material, for example, tungsten, tantalum, titanium, or silver, among many others.
- the second conductive electrode material 22 comprises silver.
- the second glass layer 20 may be chosen to considerably slow or prevent migration of electrically conductive metals, such as silver, through the resistance variable memory element 100.
- one or more additional dielectric layers 30 may be formed over the second electrode 22 and the first dielectric layer 15 to isolate the resistance variable memory element 100 from other structure fabrication over the substrate 10. Conventional processing steps can then be carried out to electrically couple the second electrode 22 to various circuits of memory arrays.
- one or more layers of a metal containing material such as silver-selenide may be deposited on the first chalcogenide glass layer 17. Any number of silver- selenide layers may be used. As shown in FIG. 8, an optional second silver-selenide layer 19 may be deposited on the first silver-selenide layer 18 subsequent to the processing step shown in FIG. 4.
- the thickness of the layers is such that the total thickness of the combined metal containing layers, e.g. silver-selenide layers, is greater than or equal to the thickness of the first chalcogenide glass layer.
- the total thickness of the combined metal containing layers is also greater than the thickness of a second glass layer. It is preferred that the total thickness of the combined metal containing layers is between about 1 to about 5 times greater than the thickness of the first chalcogenide glass layer and accordingly between about 1 to about 5 times greater than the thickness of the second glass layer. It is even more preferred that the total thickness of the combined metal containing layers is between about 2 to about 3.3 times greater than the thicknesses of the first chalcogenide glass layer and the second glass layer.
- the first chalcogenide glass layer may comprise one or more layers of a chalcogenide glass material, such as germanium-selenide.
- the second glass layer may also comprise one or more layers of a glass material. Any suitable number of layers may be used to comprise the first chalcogenide glass layer and/or the second glass layer.
- the total thickness of the metal containing layer(s) should be thicker than the total thickness of the one or more layers of chalcogenide glass and additionally the total thickness of the metal containing layer(s) should be thicker than the total thickness of the one or more layers of the second glass layer.
- a ratio of the total thickness of the metal containing layer(s) to the total thickness of the one or more layers of chalcogenide glass is between about 5:1 and about 1:1.
- a ratio of the total thickness of the metal containing layer(s) to the total thickness of the one or more layers of the second glass is between about 5:1 and about 1:1. It is even more preferred that the total thickness of the metal containing layer(s) is between about 2 to about 3.3 times greater than the total thicknesses of the combined one or more layers of chalcogenide glass and the total thickness of the combined one or more layers of the second glass
- one or more of the chalcogenide glass layers and second glass layers may also be doped with a dopant, such as a metal, preferably silver.
- the stack of layers formed between the first and second electrodes may include alternating layers of chalcogenide glass and a metal containing layer such as a silver-selenide layer. As shown in FIG. 9, which shows a second embodiment of the invention subsequent to the processing step shown in FIG. 4, the stack of layers formed between the first and second electrodes may include alternating layers of chalcogenide glass and a metal containing layer such as a silver-selenide layer. As shown in FIG.
- a first chalcogenide glass layer 17 is stacked atop a first electrode 14, a first silver-selenide layer 18 is stacked atop the first chalcogenide glass layer 17, a second chalcogenide glass layer 117 is stacked atop the first silver-selenide layer 18, a second silver-selenide layer 118 is stacked atop the second chalcogenide glass layer 117, a third chalcogenide glass layer 217 is stacked atop the second silver-selenide layer 118, a third silver-selenide layer 218 is stacked atop the third chalcogenide glass layer 217, and a fourth chalcogenide glass layer is stacked atop the third silver- selenide layer 218.
- the second conductive electrode 22 is formed over the fourth chalcogenide glass layer.
- the stack comprises at least two metal containing layers and at least three chalcogenide glass layers.
- the stack may comprise numerous alternating layers of chalcogenide glass and silver-selenide, so long as the alternating layers start with a first chalcogenide glass layer and end with a last chalcogenide glass layer, with the first chalcogenide glass layer contacting a first electrode and the last chalcogenide glass layer contacting a second electrode.
- the thickness and ratios of the alternating layers of silver-selenide and chalcogenide glass are the same as described above, in that the silver-selenide layers are preferably thicker than connecting chalcogenide glass layers, in a ratio of between about 5:1 and about 1:1 silver-selenide layer to connected chalcogenide glass layer, and more preferably between about 3.3:1 and 2:1 silver-selenide layer to connected chalcogenide glass layer.
- one or more layers of a metal containing material such as silver-selenide may be deposited between the chalcogenide glass layers. Any number of silver-selenide layers may be used. As shown FIG. 10 at a processing step subsequent to that shown in FIG. 4, an additional silver-selenide layer 418 may be deposited on the first silver-selenide layer 18 and an additional silver-selenide layer 518 may be deposited on the third silver- selenide layer 218 .
- each of the chalcogenide glass layers may comprise one or more thinner layers of a chalcogenide glass material, such as germanium-selenide. Any suitable number of layers may be used to comprise the chalcogenide glass layers.
- one or more of the chalcogenide glass layers may also be doped with a dopant such as a metal, preferably comprising silver.
- Devices constructed according to the first embodiment of the invention show improved memory retention and write/erase performance over conventional memory devices. These devices have also shown low resistance memory retention better than 1200 hours at room temperature. The devices switch at pulse widths less than 2 nanoseconds compared with conventional doped resistance variable memory elements that switch at about 100 nanoseconds.
- FIG. 10 illustrates a typical processor-based system 400 which includes a memory circuit 448, for example a programmable conductor RAM, which employs resistance variable memory elements fabricated in accordance with the invention.
- a processor system such as a computer system, generally comprises a central processing unit (CPU) 444, such as a microprocessor, a digital signal processor, or other programmable digital logic devices, which communicates with an input/output (I/O) device 446 over a bus 452.
- the memory 448 communicates with the system over bus 452 typically through a memory controller.
- the processor system may include peripheral devices such as a floppy disk drive 454 and a compact disc (CD) ROM drive 456, which also communicate with CPU 444 over the bus 452.
- Memory 448 is preferably constructed as an integrated circuit, which includes one or more resistance variable memory elements 100. If desired, the memory 448 may be combined with the processor, for example CPU 444, in a single integrated circuit.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020047012958A KR100641973B1 (en) | 2002-02-20 | 2003-02-14 | Silver-selenide/chalcogenide glass stack for resistance variable memory |
JP2003570408A JP2005518665A (en) | 2002-02-20 | 2003-02-14 | Silver selenide / chalcogenide glass for resistance change memory |
AU2003217405A AU2003217405A1 (en) | 2002-02-20 | 2003-02-14 | Silver-selenide/chalcogenide glass stack for resistance variable memory |
EP03713450A EP1476909A2 (en) | 2002-02-20 | 2003-02-14 | Silver-selenide/chalcogenide glass stack for resistance variable memory |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7786702A | 2002-02-20 | 2002-02-20 | |
US10/077,867 | 2002-02-20 | ||
US10/120,521 | 2002-04-12 | ||
US10/120,521 US7151273B2 (en) | 2002-02-20 | 2002-04-12 | Silver-selenide/chalcogenide glass stack for resistance variable memory |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003071614A2 true WO2003071614A2 (en) | 2003-08-28 |
WO2003071614A3 WO2003071614A3 (en) | 2004-04-15 |
Family
ID=27759920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/004385 WO2003071614A2 (en) | 2002-02-20 | 2003-02-14 | Silver-selenide/chalcogenide glass stack for resistance variable memory |
Country Status (8)
Country | Link |
---|---|
US (6) | US7151273B2 (en) |
EP (1) | EP1476909A2 (en) |
JP (1) | JP2005518665A (en) |
KR (1) | KR100641973B1 (en) |
CN (1) | CN100483767C (en) |
AU (1) | AU2003217405A1 (en) |
TW (1) | TW586117B (en) |
WO (1) | WO2003071614A2 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004020683A2 (en) * | 2002-08-29 | 2004-03-11 | Micron Technology, Inc. | Silver selenide film stoichiometry and morphology control in sputter deposition |
JP2006040946A (en) * | 2004-07-22 | 2006-02-09 | Sony Corp | Storage element |
WO2006034946A1 (en) * | 2004-09-27 | 2006-04-06 | Infineon Technologies Ag | Resistively switching semiconductor memory |
DE102004052645A1 (en) * | 2004-10-29 | 2006-05-04 | Infineon Technologies Ag | Non-volatile (sic) resistive storage cell with solid electrolyte matrix between first and second electrode as active layer useful in semiconductor technology has elements from groups IVb and Vb and transition metals in active layer |
DE102004052647A1 (en) * | 2004-10-29 | 2006-07-20 | Infineon Technologies Ag | Method for improving the thermal properties of semiconductor memory cells |
JP2006210718A (en) * | 2005-01-28 | 2006-08-10 | Renesas Technology Corp | Semiconductor device and manufacturing method therefor |
JP2007533136A (en) * | 2004-04-07 | 2007-11-15 | マイクロン テクノロジー,インコーポレイテッド | Multilayer resistance variable memory device and manufacturing method thereof |
US7884346B2 (en) | 2006-03-30 | 2011-02-08 | Panasonic Corporation | Nonvolatile memory element and manufacturing method thereof |
JP2011049581A (en) * | 2010-10-18 | 2011-03-10 | Sony Corp | Storage element and operating method of storage element |
JP2011258971A (en) * | 2004-07-19 | 2011-12-22 | Micron Technology Inc | Resistance variable memory device and method of fabrication |
US8242479B2 (en) | 2007-11-15 | 2012-08-14 | Panasonic Corporation | Nonvolatile memory apparatus and manufacturing method thereof |
Families Citing this family (141)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7102150B2 (en) | 2001-05-11 | 2006-09-05 | Harshfield Steven T | PCRAM memory cell and method of making same |
US6951805B2 (en) * | 2001-08-01 | 2005-10-04 | Micron Technology, Inc. | Method of forming integrated circuitry, method of forming memory circuitry, and method of forming random access memory circuitry |
US6955940B2 (en) | 2001-08-29 | 2005-10-18 | Micron Technology, Inc. | Method of forming chalcogenide comprising devices |
US6881623B2 (en) * | 2001-08-29 | 2005-04-19 | Micron Technology, Inc. | Method of forming chalcogenide comprising devices, method of forming a programmable memory cell of memory circuitry, and a chalcogenide comprising device |
US6646902B2 (en) | 2001-08-30 | 2003-11-11 | Micron Technology, Inc. | Method of retaining memory state in a programmable conductor RAM |
US6791859B2 (en) | 2001-11-20 | 2004-09-14 | Micron Technology, Inc. | Complementary bit PCRAM sense amplifier and method of operation |
US6867064B2 (en) * | 2002-02-15 | 2005-03-15 | Micron Technology, Inc. | Method to alter chalcogenide glass for improved switching characteristics |
US7151273B2 (en) | 2002-02-20 | 2006-12-19 | Micron Technology, Inc. | Silver-selenide/chalcogenide glass stack for resistance variable memory |
US6891749B2 (en) * | 2002-02-20 | 2005-05-10 | Micron Technology, Inc. | Resistance variable ‘on ’ memory |
US6849868B2 (en) * | 2002-03-14 | 2005-02-01 | Micron Technology, Inc. | Methods and apparatus for resistance variable material cells |
US6864500B2 (en) * | 2002-04-10 | 2005-03-08 | Micron Technology, Inc. | Programmable conductor memory cell structure |
US6890790B2 (en) | 2002-06-06 | 2005-05-10 | Micron Technology, Inc. | Co-sputter deposition of metal-doped chalcogenides |
US7015494B2 (en) * | 2002-07-10 | 2006-03-21 | Micron Technology, Inc. | Assemblies displaying differential negative resistance |
US6872963B2 (en) * | 2002-08-08 | 2005-03-29 | Ovonyx, Inc. | Programmable resistance memory element with layered memory material |
US7163837B2 (en) * | 2002-08-29 | 2007-01-16 | Micron Technology, Inc. | Method of forming a resistance variable memory element |
US6864521B2 (en) | 2002-08-29 | 2005-03-08 | Micron Technology, Inc. | Method to control silver concentration in a resistance variable memory element |
US6867996B2 (en) * | 2002-08-29 | 2005-03-15 | Micron Technology, Inc. | Single-polarity programmable resistance-variable memory element |
US7022579B2 (en) * | 2003-03-14 | 2006-04-04 | Micron Technology, Inc. | Method for filling via with metal |
US6903361B2 (en) * | 2003-09-17 | 2005-06-07 | Micron Technology, Inc. | Non-volatile memory structure |
US7015504B2 (en) * | 2003-11-03 | 2006-03-21 | Advanced Micro Devices, Inc. | Sidewall formation for high density polymer memory element array |
WO2005081256A1 (en) * | 2004-02-19 | 2005-09-01 | Agency For Science, Technology And Research | Electrically writeable and erasable memory medium |
US7583551B2 (en) | 2004-03-10 | 2009-09-01 | Micron Technology, Inc. | Power management control and controlling memory refresh operations |
DE102004025083A1 (en) * | 2004-05-21 | 2005-12-29 | Infineon Technologies Ag | Production of a solid body electrolyte material region made from a chalcogenide material comprises using germanium and/or silicon as precursor compound or carrier compound in the form of an organic compound |
DE102004029436B4 (en) * | 2004-06-18 | 2009-03-05 | Qimonda Ag | A method of manufacturing a solid electrolyte material region |
US7354793B2 (en) | 2004-08-12 | 2008-04-08 | Micron Technology, Inc. | Method of forming a PCRAM device incorporating a resistance-variable chalocogenide element |
US7326950B2 (en) | 2004-07-19 | 2008-02-05 | Micron Technology, Inc. | Memory device with switching glass layer |
US7365411B2 (en) | 2004-08-12 | 2008-04-29 | Micron Technology, Inc. | Resistance variable memory with temperature tolerant materials |
US20060045974A1 (en) * | 2004-08-25 | 2006-03-02 | Campbell Kristy A | Wet chemical method to form silver-rich silver-selenide |
US7023008B1 (en) * | 2004-09-30 | 2006-04-04 | Infineon Technologies Ag | Resistive memory element |
JP2006120707A (en) * | 2004-10-19 | 2006-05-11 | Matsushita Electric Ind Co Ltd | Variable resistance element and semiconductor device |
US7326951B2 (en) * | 2004-12-16 | 2008-02-05 | Macronix International Co., Ltd. | Chalcogenide random access memory |
US20060131555A1 (en) * | 2004-12-22 | 2006-06-22 | Micron Technology, Inc. | Resistance variable devices with controllable channels |
US7374174B2 (en) * | 2004-12-22 | 2008-05-20 | Micron Technology, Inc. | Small electrode for resistance variable devices |
US7317200B2 (en) | 2005-02-23 | 2008-01-08 | Micron Technology, Inc. | SnSe-based limited reprogrammable cell |
US8653495B2 (en) * | 2005-04-11 | 2014-02-18 | Micron Technology, Inc. | Heating phase change material |
US7427770B2 (en) | 2005-04-22 | 2008-09-23 | Micron Technology, Inc. | Memory array for increased bit density |
US7709289B2 (en) | 2005-04-22 | 2010-05-04 | Micron Technology, Inc. | Memory elements having patterned electrodes and method of forming the same |
CN101213612B (en) * | 2005-05-19 | 2010-09-29 | Nxp股份有限公司 | Phase change storage unit and method for forming same |
US7655938B2 (en) * | 2005-07-20 | 2010-02-02 | Kuo Charles C | Phase change memory with U-shaped chalcogenide cell |
US7274034B2 (en) | 2005-08-01 | 2007-09-25 | Micron Technology, Inc. | Resistance variable memory device with sputtered metal-chalcogenide region and method of fabrication |
US7332735B2 (en) | 2005-08-02 | 2008-02-19 | Micron Technology, Inc. | Phase change memory cell and method of formation |
US7579615B2 (en) * | 2005-08-09 | 2009-08-25 | Micron Technology, Inc. | Access transistor for memory device |
US7304368B2 (en) * | 2005-08-11 | 2007-12-04 | Micron Technology, Inc. | Chalcogenide-based electrokinetic memory element and method of forming the same |
US7251154B2 (en) | 2005-08-15 | 2007-07-31 | Micron Technology, Inc. | Method and apparatus providing a cross-point memory array using a variable resistance memory cell and capacitance |
US7521705B2 (en) * | 2005-08-15 | 2009-04-21 | Micron Technology, Inc. | Reproducible resistance variable insulating memory devices having a shaped bottom electrode |
US20070045606A1 (en) * | 2005-08-30 | 2007-03-01 | Michele Magistretti | Shaping a phase change layer in a phase change memory cell |
KR20080072697A (en) * | 2005-11-01 | 2008-08-06 | 사이더로믹스, 엘엘씨 | Growth control of oral and superficial microorganisms using gallium compounds |
US7786460B2 (en) | 2005-11-15 | 2010-08-31 | Macronix International Co., Ltd. | Phase change memory device and manufacturing method |
US7635855B2 (en) | 2005-11-15 | 2009-12-22 | Macronix International Co., Ltd. | I-shaped phase change memory cell |
US7449710B2 (en) | 2005-11-21 | 2008-11-11 | Macronix International Co., Ltd. | Vacuum jacket for phase change memory element |
US7688619B2 (en) | 2005-11-28 | 2010-03-30 | Macronix International Co., Ltd. | Phase change memory cell and manufacturing method |
US7943921B2 (en) * | 2005-12-16 | 2011-05-17 | Micron Technology, Inc. | Phase change current density control structure |
JP2007180174A (en) * | 2005-12-27 | 2007-07-12 | Fujitsu Ltd | Variable resistance memory element |
US7626190B2 (en) * | 2006-06-02 | 2009-12-01 | Infineon Technologies Ag | Memory device, in particular phase change random access memory device with transistor, and method for fabricating a memory device |
US7785920B2 (en) | 2006-07-12 | 2010-08-31 | Macronix International Co., Ltd. | Method for making a pillar-type phase change memory element |
KR100798696B1 (en) * | 2006-08-18 | 2008-01-28 | 충남대학교산학협력단 | Pmcm element containing solid electrolyte consisted of ag saturated ge-te thin film and preparation method thereof |
CN101501849B (en) * | 2006-08-25 | 2011-01-12 | 松下电器产业株式会社 | Storage element, memory device and semiconductor integrated circuit |
US7560723B2 (en) | 2006-08-29 | 2009-07-14 | Micron Technology, Inc. | Enhanced memory density resistance variable memory cells, arrays, devices and systems including the same, and methods of fabrication |
US7772581B2 (en) | 2006-09-11 | 2010-08-10 | Macronix International Co., Ltd. | Memory device having wide area phase change element and small electrode contact area |
US7504653B2 (en) | 2006-10-04 | 2009-03-17 | Macronix International Co., Ltd. | Memory cell device with circumferentially-extending memory element |
WO2008047530A1 (en) * | 2006-10-16 | 2008-04-24 | Panasonic Corporation | Non-volatile storage device and method for manufacturing the same |
US7924608B2 (en) | 2006-10-19 | 2011-04-12 | Boise State University | Forced ion migration for chalcogenide phase change memory device |
US7476587B2 (en) | 2006-12-06 | 2009-01-13 | Macronix International Co., Ltd. | Method for making a self-converged memory material element for memory cell |
US7903447B2 (en) | 2006-12-13 | 2011-03-08 | Macronix International Co., Ltd. | Method, apparatus and computer program product for read before programming process on programmable resistive memory cell |
US7718989B2 (en) | 2006-12-28 | 2010-05-18 | Macronix International Co., Ltd. | Resistor random access memory cell device |
US7786461B2 (en) | 2007-04-03 | 2010-08-31 | Macronix International Co., Ltd. | Memory structure with reduced-size memory element between memory material portions |
KR100852206B1 (en) * | 2007-04-04 | 2008-08-13 | 삼성전자주식회사 | Resist random access memory device and method for manufacturing the same |
US7888228B2 (en) * | 2007-04-05 | 2011-02-15 | Adesto Technology Corporation | Method of manufacturing an integrated circuit, an integrated circuit, and a memory module |
KR101350979B1 (en) * | 2007-05-11 | 2014-01-14 | 삼성전자주식회사 | Resistive memory device and Manufacturing Method for the same |
KR100891523B1 (en) | 2007-07-20 | 2009-04-06 | 주식회사 하이닉스반도체 | Phase change RAM device |
US7729161B2 (en) | 2007-08-02 | 2010-06-01 | Macronix International Co., Ltd. | Phase change memory with dual word lines and source lines and method of operating same |
WO2009051799A1 (en) * | 2007-10-18 | 2009-04-23 | Structured Materials Inc. | Germanium sulfide compounds for solid electrolytic memory elements |
US7919766B2 (en) | 2007-10-22 | 2011-04-05 | Macronix International Co., Ltd. | Method for making self aligning pillar memory cell device |
US7961507B2 (en) * | 2008-03-11 | 2011-06-14 | Micron Technology, Inc. | Non-volatile memory with resistive access component |
US7579210B1 (en) * | 2008-03-25 | 2009-08-25 | Ovonyx, Inc. | Planar segmented contact |
US8077505B2 (en) | 2008-05-07 | 2011-12-13 | Macronix International Co., Ltd. | Bipolar switching of phase change device |
CN101911296B (en) * | 2008-06-18 | 2012-08-22 | 佳能安内华股份有限公司 | Phase-change memory element, phase-change memory cell, vacuum treatment device, and method for manufacturing phase-change memory element |
US8742387B2 (en) * | 2008-06-25 | 2014-06-03 | Qimonda Ag | Resistive memory devices with improved resistive changing elements |
US8134857B2 (en) | 2008-06-27 | 2012-03-13 | Macronix International Co., Ltd. | Methods for high speed reading operation of phase change memory and device employing same |
US7932506B2 (en) | 2008-07-22 | 2011-04-26 | Macronix International Co., Ltd. | Fully self-aligned pore-type memory cell having diode access device |
US8467236B2 (en) | 2008-08-01 | 2013-06-18 | Boise State University | Continuously variable resistor |
US8238146B2 (en) * | 2008-08-01 | 2012-08-07 | Boise State University | Variable integrated analog resistor |
US7825479B2 (en) * | 2008-08-06 | 2010-11-02 | International Business Machines Corporation | Electrical antifuse having a multi-thickness dielectric layer |
US7903457B2 (en) | 2008-08-19 | 2011-03-08 | Macronix International Co., Ltd. | Multiple phase change materials in an integrated circuit for system on a chip application |
US7719913B2 (en) | 2008-09-12 | 2010-05-18 | Macronix International Co., Ltd. | Sensing circuit for PCRAM applications |
US8324605B2 (en) | 2008-10-02 | 2012-12-04 | Macronix International Co., Ltd. | Dielectric mesh isolated phase change structure for phase change memory |
US8036014B2 (en) | 2008-11-06 | 2011-10-11 | Macronix International Co., Ltd. | Phase change memory program method without over-reset |
US7869270B2 (en) | 2008-12-29 | 2011-01-11 | Macronix International Co., Ltd. | Set algorithm for phase change memory cell |
US8089137B2 (en) | 2009-01-07 | 2012-01-03 | Macronix International Co., Ltd. | Integrated circuit memory with single crystal silicon on silicide driver and manufacturing method |
US8107283B2 (en) | 2009-01-12 | 2012-01-31 | Macronix International Co., Ltd. | Method for setting PCRAM devices |
US8030635B2 (en) | 2009-01-13 | 2011-10-04 | Macronix International Co., Ltd. | Polysilicon plug bipolar transistor for phase change memory |
US8064247B2 (en) | 2009-01-14 | 2011-11-22 | Macronix International Co., Ltd. | Rewritable memory device based on segregation/re-absorption |
US8933536B2 (en) | 2009-01-22 | 2015-01-13 | Macronix International Co., Ltd. | Polysilicon pillar bipolar transistor with self-aligned memory element |
US8134138B2 (en) * | 2009-01-30 | 2012-03-13 | Seagate Technology Llc | Programmable metallization memory cell with planarized silver electrode |
US8084760B2 (en) | 2009-04-20 | 2011-12-27 | Macronix International Co., Ltd. | Ring-shaped electrode and manufacturing method for same |
US8426839B1 (en) * | 2009-04-24 | 2013-04-23 | Adesto Technologies Corporation | Conducting bridge random access memory (CBRAM) device structures |
US8173987B2 (en) | 2009-04-27 | 2012-05-08 | Macronix International Co., Ltd. | Integrated circuit 3D phase change memory array and manufacturing method |
US8097871B2 (en) | 2009-04-30 | 2012-01-17 | Macronix International Co., Ltd. | Low operational current phase change memory structures |
US7933139B2 (en) | 2009-05-15 | 2011-04-26 | Macronix International Co., Ltd. | One-transistor, one-resistor, one-capacitor phase change memory |
US8350316B2 (en) | 2009-05-22 | 2013-01-08 | Macronix International Co., Ltd. | Phase change memory cells having vertical channel access transistor and memory plane |
US7968876B2 (en) | 2009-05-22 | 2011-06-28 | Macronix International Co., Ltd. | Phase change memory cell having vertical channel access transistor |
US8809829B2 (en) | 2009-06-15 | 2014-08-19 | Macronix International Co., Ltd. | Phase change memory having stabilized microstructure and manufacturing method |
US8406033B2 (en) | 2009-06-22 | 2013-03-26 | Macronix International Co., Ltd. | Memory device and method for sensing and fixing margin cells |
US8238149B2 (en) | 2009-06-25 | 2012-08-07 | Macronix International Co., Ltd. | Methods and apparatus for reducing defect bits in phase change memory |
US8363463B2 (en) | 2009-06-25 | 2013-01-29 | Macronix International Co., Ltd. | Phase change memory having one or more non-constant doping profiles |
US8110822B2 (en) | 2009-07-15 | 2012-02-07 | Macronix International Co., Ltd. | Thermal protect PCRAM structure and methods for making |
US8198619B2 (en) | 2009-07-15 | 2012-06-12 | Macronix International Co., Ltd. | Phase change memory cell structure |
US7894254B2 (en) | 2009-07-15 | 2011-02-22 | Macronix International Co., Ltd. | Refresh circuitry for phase change memory |
US8064248B2 (en) | 2009-09-17 | 2011-11-22 | Macronix International Co., Ltd. | 2T2R-1T1R mix mode phase change memory array |
US8278139B2 (en) | 2009-09-25 | 2012-10-02 | Applied Materials, Inc. | Passivating glue layer to improve amorphous carbon to metal adhesion |
US20110079709A1 (en) * | 2009-10-07 | 2011-04-07 | Campbell Kristy A | Wide band sensor |
US8178387B2 (en) | 2009-10-23 | 2012-05-15 | Macronix International Co., Ltd. | Methods for reducing recrystallization time for a phase change material |
US20110192320A1 (en) * | 2010-02-09 | 2011-08-11 | Silberline Manufacturing Company, Inc. | Black metallic effect pigments |
US8284590B2 (en) | 2010-05-06 | 2012-10-09 | Boise State University | Integratable programmable capacitive device |
US8729521B2 (en) | 2010-05-12 | 2014-05-20 | Macronix International Co., Ltd. | Self aligned fin-type programmable memory cell |
US8310864B2 (en) | 2010-06-15 | 2012-11-13 | Macronix International Co., Ltd. | Self-aligned bit line under word line memory array |
US8618526B2 (en) * | 2010-08-17 | 2013-12-31 | Panasonic Corporation | Nonvolatile memory device and manufacturing method thereof |
US8395935B2 (en) | 2010-10-06 | 2013-03-12 | Macronix International Co., Ltd. | Cross-point self-aligned reduced cell size phase change memory |
US8497705B2 (en) | 2010-11-09 | 2013-07-30 | Macronix International Co., Ltd. | Phase change device for interconnection of programmable logic device |
US8227785B2 (en) * | 2010-11-11 | 2012-07-24 | Micron Technology, Inc. | Chalcogenide containing semiconductors with chalcogenide gradient |
US8467238B2 (en) | 2010-11-15 | 2013-06-18 | Macronix International Co., Ltd. | Dynamic pulse operation for phase change memory |
US20120168233A1 (en) * | 2010-12-30 | 2012-07-05 | Purdue Research Foundation | Robotic devices and methods |
JP5548170B2 (en) | 2011-08-09 | 2014-07-16 | 株式会社東芝 | Resistance change memory and manufacturing method thereof |
US9054295B2 (en) * | 2011-08-23 | 2015-06-09 | Micron Technology, Inc. | Phase change memory cells including nitrogenated carbon materials, methods of forming the same, and phase change memory devices including nitrogenated carbon materials |
KR20130142518A (en) * | 2012-06-19 | 2013-12-30 | 에스케이하이닉스 주식회사 | Resistive memory device, memory apparatus and data processing system having the same |
US8729519B2 (en) * | 2012-10-23 | 2014-05-20 | Micron Technology, Inc. | Memory constructions |
KR102077641B1 (en) | 2013-08-06 | 2020-02-14 | 삼성전자주식회사 | Phase-change material layer and method of manufacturing the same |
US9559113B2 (en) | 2014-05-01 | 2017-01-31 | Macronix International Co., Ltd. | SSL/GSL gate oxide in 3D vertical channel NAND |
US9425389B2 (en) * | 2014-12-08 | 2016-08-23 | Intermolecular, Inc. | Doped ternary nitride embedded resistors for resistive random access memory cells |
US10388371B2 (en) * | 2015-01-26 | 2019-08-20 | Agency For Science, Technology And Research | Memory cell selector and method of operating memory cell |
US9379321B1 (en) * | 2015-03-20 | 2016-06-28 | Intel Corporation | Chalcogenide glass composition and chalcogenide switch devices |
US9583703B2 (en) | 2015-06-01 | 2017-02-28 | Boise State University | Tunable variable resistance memory device |
US9583699B2 (en) | 2015-06-01 | 2017-02-28 | Boise State University | Tunable variable resistance memory device |
US9672906B2 (en) | 2015-06-19 | 2017-06-06 | Macronix International Co., Ltd. | Phase change memory with inter-granular switching |
US11003981B2 (en) | 2017-05-25 | 2021-05-11 | International Business Machines Corporation | Two-terminal metastable mixed-conductor memristive devices |
US10340447B2 (en) | 2017-06-07 | 2019-07-02 | International Business Machines Corporation | Three-terminal metastable symmetric zero-volt battery memristive device |
CN107732010B (en) * | 2017-09-29 | 2020-07-10 | 华中科技大学 | Gate tube device and preparation method thereof |
KR102549544B1 (en) | 2018-09-03 | 2023-06-29 | 삼성전자주식회사 | Memory devices |
KR102030341B1 (en) * | 2018-12-19 | 2019-10-10 | 한양대학교 산학협력단 | Selective device and memory device including the same |
US11271151B2 (en) * | 2019-06-12 | 2022-03-08 | International Business Machines Corporation | Phase change memory using multiple phase change layers and multiple heat conductors |
CN111116201B (en) * | 2020-01-07 | 2021-01-15 | 北京科技大学 | Preparation method of GeS-based thermoelectric material |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3753110A (en) * | 1970-12-24 | 1973-08-14 | Sanyo Electric Co | Timing apparatus using electrochemical memory device |
US4115872A (en) * | 1977-05-31 | 1978-09-19 | Burroughs Corporation | Amorphous semiconductor memory device for employment in an electrically alterable read-only memory |
US4203123A (en) * | 1977-12-12 | 1980-05-13 | Burroughs Corporation | Thin film memory device employing amorphous semiconductor materials |
US5363329A (en) * | 1993-11-10 | 1994-11-08 | Eugeniy Troyan | Semiconductor memory device for use in an electrically alterable read-only memory |
US5825046A (en) * | 1996-10-28 | 1998-10-20 | Energy Conversion Devices, Inc. | Composite memory material comprising a mixture of phase-change memory material and dielectric material |
US5920788A (en) * | 1995-06-07 | 1999-07-06 | Micron Technology, Inc. | Chalcogenide memory cell with a plurality of chalcogenide electrodes |
US5952671A (en) * | 1997-05-09 | 1999-09-14 | Micron Technology, Inc. | Small electrode for a chalcogenide switching device and method for fabricating same |
EP1202285A2 (en) * | 2000-10-27 | 2002-05-02 | Matsushita Electric Industrial Co., Ltd. | Memory, writing apparatus, reading apparatus, writing method, and reading method |
Family Cites Families (196)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3271591A (en) | 1963-09-20 | 1966-09-06 | Energy Conversion Devices Inc | Symmetrical current controlling device |
US3622319A (en) | 1966-10-20 | 1971-11-23 | Western Electric Co | Nonreflecting photomasks and methods of making same |
US3868651A (en) | 1970-08-13 | 1975-02-25 | Energy Conversion Devices Inc | Method and apparatus for storing and reading data in a memory having catalytic material to initiate amorphous to crystalline change in memory structure |
US3743847A (en) | 1971-06-01 | 1973-07-03 | Motorola Inc | Amorphous silicon film as a uv filter |
US4267261A (en) | 1971-07-15 | 1981-05-12 | Energy Conversion Devices, Inc. | Method for full format imaging |
US3961314A (en) | 1974-03-05 | 1976-06-01 | Energy Conversion Devices, Inc. | Structure and method for producing an image |
US3966317A (en) | 1974-04-08 | 1976-06-29 | Energy Conversion Devices, Inc. | Dry process production of archival microform records from hard copy |
US4177474A (en) | 1977-05-18 | 1979-12-04 | Energy Conversion Devices, Inc. | High temperature amorphous semiconductor member and method of making the same |
JPS5565365A (en) | 1978-11-07 | 1980-05-16 | Nippon Telegr & Teleph Corp <Ntt> | Pattern forming method |
DE2901303C2 (en) | 1979-01-15 | 1984-04-19 | Max Planck Gesellschaft Zur Foerderung Der Wissenschaften E.V., 3400 Goettingen | Solid ionic conductor material, its use and process for its manufacture |
US4312938A (en) | 1979-07-06 | 1982-01-26 | Drexler Technology Corporation | Method for making a broadband reflective laser recording and data storage medium with absorptive underlayer |
US4269935A (en) | 1979-07-13 | 1981-05-26 | Ionomet Company, Inc. | Process of doping silver image in chalcogenide layer |
US4316946A (en) | 1979-12-03 | 1982-02-23 | Ionomet Company, Inc. | Surface sensitized chalcogenide product and process for making and using the same |
US4315946A (en) * | 1980-02-13 | 1982-02-16 | Kraft, Inc. | Modified vegetable protein isolates |
JPS6024580B2 (en) | 1980-03-10 | 1985-06-13 | 日本電信電話株式会社 | Manufacturing method for semiconductor devices |
US4499557A (en) | 1980-10-28 | 1985-02-12 | Energy Conversion Devices, Inc. | Programmable cell for use in programmable electronic arrays |
US4405710A (en) | 1981-06-22 | 1983-09-20 | Cornell Research Foundation, Inc. | Ion beam exposure of (g-Gex -Se1-x) inorganic resists |
US4737379A (en) | 1982-09-24 | 1988-04-12 | Energy Conversion Devices, Inc. | Plasma deposited coatings, and low temperature plasma method of making same |
US4545111A (en) | 1983-01-18 | 1985-10-08 | Energy Conversion Devices, Inc. | Method for making, parallel preprogramming or field programming of electronic matrix arrays |
US4608296A (en) | 1983-12-06 | 1986-08-26 | Energy Conversion Devices, Inc. | Superconducting films and devices exhibiting AC to DC conversion |
US4795657A (en) | 1984-04-13 | 1989-01-03 | Energy Conversion Devices, Inc. | Method of fabricating a programmable array |
US4670763A (en) | 1984-05-14 | 1987-06-02 | Energy Conversion Devices, Inc. | Thin film field effect transistor |
US4843443A (en) | 1984-05-14 | 1989-06-27 | Energy Conversion Devices, Inc. | Thin film field effect transistor and method of making same |
US4673957A (en) | 1984-05-14 | 1987-06-16 | Energy Conversion Devices, Inc. | Integrated circuit compatible thin film field effect transistor and method of making same |
US4668968A (en) | 1984-05-14 | 1987-05-26 | Energy Conversion Devices, Inc. | Integrated circuit compatible thin film field effect transistor and method of making same |
US4769338A (en) | 1984-05-14 | 1988-09-06 | Energy Conversion Devices, Inc. | Thin film field effect transistor and method of making same |
US4678679A (en) | 1984-06-25 | 1987-07-07 | Energy Conversion Devices, Inc. | Continuous deposition of activated process gases |
US4646266A (en) | 1984-09-28 | 1987-02-24 | Energy Conversion Devices, Inc. | Programmable semiconductor structures and methods for using the same |
DE3545912C2 (en) * | 1984-12-28 | 1995-07-13 | Canon Kk | printer |
US4664939A (en) | 1985-04-01 | 1987-05-12 | Energy Conversion Devices, Inc. | Vertical semiconductor processor |
US4637895A (en) | 1985-04-01 | 1987-01-20 | Energy Conversion Devices, Inc. | Gas mixtures for the vapor deposition of semiconductor material |
US4710899A (en) | 1985-06-10 | 1987-12-01 | Energy Conversion Devices, Inc. | Data storage medium incorporating a transition metal for increased switching speed |
US4671618A (en) | 1986-05-22 | 1987-06-09 | Wu Bao Gang | Liquid crystalline-plastic material having submillisecond switch times and extended memory |
US4766471A (en) | 1986-01-23 | 1988-08-23 | Energy Conversion Devices, Inc. | Thin film electro-optical devices |
US4818717A (en) | 1986-06-27 | 1989-04-04 | Energy Conversion Devices, Inc. | Method for making electronic matrix arrays |
US4728406A (en) | 1986-08-18 | 1988-03-01 | Energy Conversion Devices, Inc. | Method for plasma - coating a semiconductor body |
US4809044A (en) | 1986-08-22 | 1989-02-28 | Energy Conversion Devices, Inc. | Thin film overvoltage protection devices |
US4845533A (en) | 1986-08-22 | 1989-07-04 | Energy Conversion Devices, Inc. | Thin film electrical devices with amorphous carbon electrodes and method of making same |
US4788594A (en) | 1986-10-15 | 1988-11-29 | Energy Conversion Devices, Inc. | Solid state electronic camera including thin film matrix of photosensors |
US4853785A (en) | 1986-10-15 | 1989-08-01 | Energy Conversion Devices, Inc. | Electronic camera including electronic signal storage cartridge |
US4847674A (en) | 1987-03-10 | 1989-07-11 | Advanced Micro Devices, Inc. | High speed interconnect system with refractory non-dogbone contacts and an active electromigration suppression mechanism |
US4800526A (en) | 1987-05-08 | 1989-01-24 | Gaf Corporation | Memory element for information storage and retrieval system and associated process |
US4775425A (en) | 1987-07-27 | 1988-10-04 | Energy Conversion Devices, Inc. | P and n-type microcrystalline semiconductor alloy material including band gap widening elements, devices utilizing same |
US4891330A (en) | 1987-07-27 | 1990-01-02 | Energy Conversion Devices, Inc. | Method of fabricating n-type and p-type microcrystalline semiconductor alloy material including band gap widening elements |
US5272359A (en) | 1988-04-07 | 1993-12-21 | California Institute Of Technology | Reversible non-volatile switch based on a TCNQ charge transfer complex |
GB8910854D0 (en) | 1989-05-11 | 1989-06-28 | British Petroleum Co Plc | Semiconductor device |
US5159661A (en) | 1990-10-05 | 1992-10-27 | Energy Conversion Devices, Inc. | Vertically interconnected parallel distributed processor |
US5314772A (en) | 1990-10-09 | 1994-05-24 | Arizona Board Of Regents | High resolution, multi-layer resist for microlithography and method therefor |
JPH0770731B2 (en) | 1990-11-22 | 1995-07-31 | 松下電器産業株式会社 | Electroplastic element |
US5596522A (en) | 1991-01-18 | 1997-01-21 | Energy Conversion Devices, Inc. | Homogeneous compositions of microcrystalline semiconductor material, semiconductor devices and directly overwritable memory elements fabricated therefrom, and arrays fabricated from the memory elements |
US5296716A (en) | 1991-01-18 | 1994-03-22 | Energy Conversion Devices, Inc. | Electrically erasable, directly overwritable, multibit single cell memory elements and arrays fabricated therefrom |
US5335219A (en) | 1991-01-18 | 1994-08-02 | Ovshinsky Stanford R | Homogeneous composition of microcrystalline semiconductor material, semiconductor devices and directly overwritable memory elements fabricated therefrom, and arrays fabricated from the memory elements |
US5536947A (en) | 1991-01-18 | 1996-07-16 | Energy Conversion Devices, Inc. | Electrically erasable, directly overwritable, multibit single cell memory element and arrays fabricated therefrom |
US5341328A (en) | 1991-01-18 | 1994-08-23 | Energy Conversion Devices, Inc. | Electrically erasable memory elements having reduced switching current requirements and increased write/erase cycle life |
US5166758A (en) | 1991-01-18 | 1992-11-24 | Energy Conversion Devices, Inc. | Electrically erasable phase change memory |
US5534712A (en) | 1991-01-18 | 1996-07-09 | Energy Conversion Devices, Inc. | Electrically erasable memory elements characterized by reduced current and improved thermal stability |
US5406509A (en) | 1991-01-18 | 1995-04-11 | Energy Conversion Devices, Inc. | Electrically erasable, directly overwritable, multibit single cell memory elements and arrays fabricated therefrom |
US5414271A (en) | 1991-01-18 | 1995-05-09 | Energy Conversion Devices, Inc. | Electrically erasable memory elements having improved set resistance stability |
US5534711A (en) | 1991-01-18 | 1996-07-09 | Energy Conversion Devices, Inc. | Electrically erasable, directly overwritable, multibit single cell memory elements and arrays fabricated therefrom |
US5128099A (en) | 1991-02-15 | 1992-07-07 | Energy Conversion Devices, Inc. | Congruent state changeable optical memory material and device |
US5219788A (en) | 1991-02-25 | 1993-06-15 | Ibm Corporation | Bilayer metallization cap for photolithography |
US5177567A (en) | 1991-07-19 | 1993-01-05 | Energy Conversion Devices, Inc. | Thin-film structure for chalcogenide electrical switching devices and process therefor |
US5359205A (en) | 1991-11-07 | 1994-10-25 | Energy Conversion Devices, Inc. | Electrically erasable memory elements characterized by reduced current and improved thermal stability |
US5238862A (en) | 1992-03-18 | 1993-08-24 | Micron Technology, Inc. | Method of forming a stacked capacitor with striated electrode |
US5512328A (en) | 1992-08-07 | 1996-04-30 | Hitachi, Ltd. | Method for forming a pattern and forming a thin film used in pattern formation |
US5350484A (en) | 1992-09-08 | 1994-09-27 | Intel Corporation | Method for the anisotropic etching of metal films in the fabrication of interconnects |
US5818749A (en) | 1993-08-20 | 1998-10-06 | Micron Technology, Inc. | Integrated circuit memory device |
BE1007902A3 (en) | 1993-12-23 | 1995-11-14 | Philips Electronics Nv | Switching element with memory with schottky barrier tunnel. |
US5500532A (en) | 1994-08-18 | 1996-03-19 | Arizona Board Of Regents | Personal electronic dosimeter |
JP2643870B2 (en) | 1994-11-29 | 1997-08-20 | 日本電気株式会社 | Method for manufacturing semiconductor memory device |
US5543737A (en) | 1995-02-10 | 1996-08-06 | Energy Conversion Devices, Inc. | Logical operation circuit employing two-terminal chalcogenide switches |
US5869843A (en) | 1995-06-07 | 1999-02-09 | Micron Technology, Inc. | Memory array having a multi-state element and method for forming such array or cells thereof |
US5879955A (en) | 1995-06-07 | 1999-03-09 | Micron Technology, Inc. | Method for fabricating an array of ultra-small pores for chalcogenide memory cells |
WO1996041381A1 (en) | 1995-06-07 | 1996-12-19 | Micron Technology, Inc. | A stack/trench diode for use with a multi-state material in a non-volatile memory cell |
US5751012A (en) | 1995-06-07 | 1998-05-12 | Micron Technology, Inc. | Polysilicon pillar diode for use in a non-volatile memory cell |
US6420725B1 (en) | 1995-06-07 | 2002-07-16 | Micron Technology, Inc. | Method and apparatus for forming an integrated circuit electrode having a reduced contact area |
US5714768A (en) | 1995-10-24 | 1998-02-03 | Energy Conversion Devices, Inc. | Second-layer phase change memory array on top of a logic device |
US5837564A (en) | 1995-11-01 | 1998-11-17 | Micron Technology, Inc. | Method for optimal crystallization to obtain high electrical performance from chalcogenides |
US5694054A (en) | 1995-11-28 | 1997-12-02 | Energy Conversion Devices, Inc. | Integrated drivers for flat panel displays employing chalcogenide logic elements |
US5591501A (en) | 1995-12-20 | 1997-01-07 | Energy Conversion Devices, Inc. | Optical recording medium having a plurality of discrete phase change data recording points |
US6653733B1 (en) | 1996-02-23 | 2003-11-25 | Micron Technology, Inc. | Conductors in semiconductor devices |
JPH09262484A (en) * | 1996-03-29 | 1997-10-07 | Ngk Insulators Ltd | Ceramic honeycomb catalyst having high thermal shock resistance |
US5687112A (en) | 1996-04-19 | 1997-11-11 | Energy Conversion Devices, Inc. | Multibit single cell memory element having tapered contact |
US5852870A (en) | 1996-04-24 | 1998-12-29 | Amkor Technology, Inc. | Method of making grid array assembly |
US5851882A (en) | 1996-05-06 | 1998-12-22 | Micron Technology, Inc. | ZPROM manufacture and design and methods for forming thin structures using spacers as an etching mask |
US5761115A (en) | 1996-05-30 | 1998-06-02 | Axon Technologies Corporation | Programmable metallization cell structure and method of making same |
US5789277A (en) | 1996-07-22 | 1998-08-04 | Micron Technology, Inc. | Method of making chalogenide memory device |
US5814527A (en) | 1996-07-22 | 1998-09-29 | Micron Technology, Inc. | Method of making small pores defined by a disposable internal spacer for use in chalcogenide memories |
US5998244A (en) | 1996-08-22 | 1999-12-07 | Micron Technology, Inc. | Memory cell incorporating a chalcogenide element and method of making same |
US6087674A (en) | 1996-10-28 | 2000-07-11 | Energy Conversion Devices, Inc. | Memory element with memory material comprising phase-change material and dielectric material |
US5846889A (en) | 1997-03-14 | 1998-12-08 | The United States Of America As Represented By The Secretary Of The Navy | Infrared transparent selenide glasses |
US5998066A (en) | 1997-05-16 | 1999-12-07 | Aerial Imaging Corporation | Gray scale mask and depth pattern transfer technique using inorganic chalcogenide glass |
US6031287A (en) | 1997-06-18 | 2000-02-29 | Micron Technology, Inc. | Contact structure and memory element incorporating the same |
US5933365A (en) | 1997-06-19 | 1999-08-03 | Energy Conversion Devices, Inc. | Memory element with energy control mechanism |
US6051511A (en) | 1997-07-31 | 2000-04-18 | Micron Technology, Inc. | Method and apparatus for reducing isolation stress in integrated circuits |
WO1999028914A2 (en) | 1997-12-04 | 1999-06-10 | Axon Technologies Corporation | Programmable sub-surface aggregating metallization structure and method of making same |
US6011757A (en) | 1998-01-27 | 2000-01-04 | Ovshinsky; Stanford R. | Optical recording media having increased erasability |
US5912839A (en) | 1998-06-23 | 1999-06-15 | Energy Conversion Devices, Inc. | Universal memory element and method of programming same |
US6297170B1 (en) | 1998-06-23 | 2001-10-02 | Vlsi Technology, Inc. | Sacrificial multilayer anti-reflective coating for mos gate formation |
US6141241A (en) | 1998-06-23 | 2000-10-31 | Energy Conversion Devices, Inc. | Universal memory element with systems employing same and apparatus and method for reading, writing and programming same |
US6388324B2 (en) | 1998-08-31 | 2002-05-14 | Arizona Board Of Regents | Self-repairing interconnections for electrical circuits |
US6469364B1 (en) | 1998-08-31 | 2002-10-22 | Arizona Board Of Regents | Programmable interconnection system for electrical circuits |
US6245663B1 (en) | 1998-09-30 | 2001-06-12 | Conexant Systems, Inc. | IC interconnect structures and methods for making same |
US6825489B2 (en) | 2001-04-06 | 2004-11-30 | Axon Technologies Corporation | Microelectronic device, structure, and system, including a memory structure having a variable programmable property and method of forming the same |
US6487106B1 (en) | 1999-01-12 | 2002-11-26 | Arizona Board Of Regents | Programmable microelectronic devices and method of forming and programming same |
US6635914B2 (en) * | 2000-09-08 | 2003-10-21 | Axon Technologies Corp. | Microelectronic programmable device and methods of forming and programming the same |
US6174799B1 (en) | 1999-01-05 | 2001-01-16 | Advanced Micro Devices, Inc. | Graded compound seed layers for semiconductors |
US6177338B1 (en) | 1999-02-08 | 2001-01-23 | Taiwan Semiconductor Manufacturing Company | Two step barrier process |
CA2362283A1 (en) | 1999-02-11 | 2000-08-17 | Arizona Board Of Regents | Programmable microelectronic devices and methods of forming and programming same |
US6072716A (en) | 1999-04-14 | 2000-06-06 | Massachusetts Institute Of Technology | Memory structures and methods of making same |
US6143604A (en) | 1999-06-04 | 2000-11-07 | Taiwan Semiconductor Manufacturing Company | Method for fabricating small-size two-step contacts for word-line strapping on dynamic random access memory (DRAM) |
US6350679B1 (en) | 1999-08-03 | 2002-02-26 | Micron Technology, Inc. | Methods of providing an interlevel dielectric layer intermediate different elevation conductive metal layers in the fabrication of integrated circuitry |
US6423628B1 (en) | 1999-10-22 | 2002-07-23 | Lsi Logic Corporation | Method of forming integrated circuit structure having low dielectric constant material and having silicon oxynitride caps over closely spaced apart metal lines |
US6865117B2 (en) | 2000-02-11 | 2005-03-08 | Axon Technologies Corporation | Programming circuit for a programmable microelectronic device, system including the circuit, and method of forming the same |
US6914802B2 (en) | 2000-02-11 | 2005-07-05 | Axon Technologies Corporation | Microelectronic photonic structure and device and method of forming the same |
US6391668B1 (en) * | 2000-05-01 | 2002-05-21 | Agere Systems Guardian Corp. | Method of determining a trap density of a semiconductor/oxide interface by a contactless charge technique |
US6501111B1 (en) | 2000-06-30 | 2002-12-31 | Intel Corporation | Three-dimensional (3D) programmable device |
US6440837B1 (en) | 2000-07-14 | 2002-08-27 | Micron Technology, Inc. | Method of forming a contact structure in a semiconductor device |
US6563156B2 (en) | 2001-03-15 | 2003-05-13 | Micron Technology, Inc. | Memory elements and methods for making same |
AU2001288971A1 (en) | 2000-09-08 | 2002-03-22 | Axon Technologies Corporation | Microelectronic programmable device and methods of forming and programming the same |
US6339544B1 (en) | 2000-09-29 | 2002-01-15 | Intel Corporation | Method to enhance performance of thermal resistor device |
US6567293B1 (en) | 2000-09-29 | 2003-05-20 | Ovonyx, Inc. | Single level metal memory cell using chalcogenide cladding |
US6563164B2 (en) | 2000-09-29 | 2003-05-13 | Ovonyx, Inc. | Compositionally modified resistive electrode |
US6429064B1 (en) | 2000-09-29 | 2002-08-06 | Intel Corporation | Reduced contact area of sidewall conductor |
US6555860B2 (en) | 2000-09-29 | 2003-04-29 | Intel Corporation | Compositionally modified resistive electrode |
US6404665B1 (en) | 2000-09-29 | 2002-06-11 | Intel Corporation | Compositionally modified resistive electrode |
US6653193B2 (en) | 2000-12-08 | 2003-11-25 | Micron Technology, Inc. | Resistance variable device |
US6649928B2 (en) | 2000-12-13 | 2003-11-18 | Intel Corporation | Method to selectively remove one side of a conductive bottom electrode of a phase-change memory cell and structure obtained thereby |
US6696355B2 (en) | 2000-12-14 | 2004-02-24 | Ovonyx, Inc. | Method to selectively increase the top resistance of the lower programming electrode in a phase-change memory |
US6569705B2 (en) | 2000-12-21 | 2003-05-27 | Intel Corporation | Metal structure for a phase-change memory device |
US6437383B1 (en) | 2000-12-21 | 2002-08-20 | Intel Corporation | Dual trench isolation for a phase-change memory cell and method of making same |
US6534781B2 (en) | 2000-12-26 | 2003-03-18 | Ovonyx, Inc. | Phase-change memory bipolar array utilizing a single shallow trench isolation for creating an individual active area region for two memory array elements and one bipolar base contact |
US6646297B2 (en) | 2000-12-26 | 2003-11-11 | Ovonyx, Inc. | Lower electrode isolation in a double-wide trench |
US6531373B2 (en) | 2000-12-27 | 2003-03-11 | Ovonyx, Inc. | Method of forming a phase-change memory cell using silicon on insulator low electrode in charcogenide elements |
US6687427B2 (en) | 2000-12-29 | 2004-02-03 | Intel Corporation | Optic switch |
US6638820B2 (en) | 2001-02-08 | 2003-10-28 | Micron Technology, Inc. | Method of forming chalcogenide comprising devices, method of precluding diffusion of a metal into adjacent chalcogenide material, and chalcogenide comprising devices |
US6727192B2 (en) | 2001-03-01 | 2004-04-27 | Micron Technology, Inc. | Methods of metal doping a chalcogenide material |
US6348365B1 (en) | 2001-03-02 | 2002-02-19 | Micron Technology, Inc. | PCRAM cell manufacturing |
US6818481B2 (en) | 2001-03-07 | 2004-11-16 | Micron Technology, Inc. | Method to manufacture a buried electrode PCRAM cell |
US6734455B2 (en) | 2001-03-15 | 2004-05-11 | Micron Technology, Inc. | Agglomeration elimination for metal sputter deposition of chalcogenides |
US6473332B1 (en) | 2001-04-04 | 2002-10-29 | The University Of Houston System | Electrically variable multi-state resistance computing |
EP1397809B1 (en) | 2001-05-07 | 2007-06-27 | Advanced Micro Devices, Inc. | A memory device with a self-assembled polymer film and method of making the same |
US7102150B2 (en) | 2001-05-11 | 2006-09-05 | Harshfield Steven T | PCRAM memory cell and method of making same |
US6480438B1 (en) | 2001-06-12 | 2002-11-12 | Ovonyx, Inc. | Providing equal cell programming conditions across a large and high density array of phase-change memory cells |
US6613604B2 (en) | 2001-08-02 | 2003-09-02 | Ovonyx, Inc. | Method for making small pore for use in programmable resistance memory element |
US6589714B2 (en) | 2001-06-26 | 2003-07-08 | Ovonyx, Inc. | Method for making programmable resistance memory element using silylated photoresist |
US6570784B2 (en) | 2001-06-29 | 2003-05-27 | Ovonyx, Inc. | Programming a phase-change material memory |
US6462984B1 (en) | 2001-06-29 | 2002-10-08 | Intel Corporation | Biasing scheme of floating unselected wordlines and bitlines of a diode-based memory array |
US6487113B1 (en) | 2001-06-29 | 2002-11-26 | Ovonyx, Inc. | Programming a phase-change memory with slow quench time |
US6605527B2 (en) | 2001-06-30 | 2003-08-12 | Intel Corporation | Reduced area intersection between electrode and programming element |
US6511862B2 (en) | 2001-06-30 | 2003-01-28 | Ovonyx, Inc. | Modified contact for programmable devices |
US6673700B2 (en) | 2001-06-30 | 2004-01-06 | Ovonyx, Inc. | Reduced area intersection between electrode and programming element |
US6511867B2 (en) | 2001-06-30 | 2003-01-28 | Ovonyx, Inc. | Utilizing atomic layer deposition for programmable device |
US6514805B2 (en) | 2001-06-30 | 2003-02-04 | Intel Corporation | Trench sidewall profile for device isolation |
US6642102B2 (en) | 2001-06-30 | 2003-11-04 | Intel Corporation | Barrier material encapsulation of programmable material |
US6951805B2 (en) | 2001-08-01 | 2005-10-04 | Micron Technology, Inc. | Method of forming integrated circuitry, method of forming memory circuitry, and method of forming random access memory circuitry |
US6590807B2 (en) | 2001-08-02 | 2003-07-08 | Intel Corporation | Method for reading a structural phase-change memory |
US6737312B2 (en) * | 2001-08-27 | 2004-05-18 | Micron Technology, Inc. | Method of fabricating dual PCRAM cells sharing a common electrode |
US6881623B2 (en) | 2001-08-29 | 2005-04-19 | Micron Technology, Inc. | Method of forming chalcogenide comprising devices, method of forming a programmable memory cell of memory circuitry, and a chalcogenide comprising device |
US6784018B2 (en) | 2001-08-29 | 2004-08-31 | Micron Technology, Inc. | Method of forming chalcogenide comprising devices and method of forming a programmable memory cell of memory circuitry |
US6955940B2 (en) | 2001-08-29 | 2005-10-18 | Micron Technology, Inc. | Method of forming chalcogenide comprising devices |
US6709958B2 (en) | 2001-08-30 | 2004-03-23 | Micron Technology, Inc. | Integrated circuit device and fabrication using metal-doped chalcogenide materials |
US6646902B2 (en) | 2001-08-30 | 2003-11-11 | Micron Technology, Inc. | Method of retaining memory state in a programmable conductor RAM |
US20030047765A1 (en) | 2001-08-30 | 2003-03-13 | Campbell Kristy A. | Stoichiometry for chalcogenide glasses useful for memory devices and method of formation |
US6757971B2 (en) | 2001-08-30 | 2004-07-06 | Micron Technology, Inc. | Filling plugs through chemical mechanical polish |
US6507061B1 (en) | 2001-08-31 | 2003-01-14 | Intel Corporation | Multiple layer phase-change memory |
US7113474B2 (en) | 2001-09-01 | 2006-09-26 | Energy Conversion Devices, Inc. | Increased data storage in optical data storage and retrieval systems using blue lasers and/or plasmon lenses |
US6586761B2 (en) | 2001-09-07 | 2003-07-01 | Intel Corporation | Phase change material memory device |
US6545287B2 (en) | 2001-09-07 | 2003-04-08 | Intel Corporation | Using selective deposition to form phase-change memory cells |
WO2003028098A2 (en) | 2001-09-26 | 2003-04-03 | Axon Technologies Corporation | Programmable chip-to-substrate interconnect structure and device and method of forming same |
US6690026B2 (en) | 2001-09-28 | 2004-02-10 | Intel Corporation | Method of fabricating a three-dimensional array of active media |
AU2002362662A1 (en) | 2001-10-09 | 2003-04-22 | Axon Technologies Corporation | Programmable microelectronic device, structure, and system, and method of forming the same |
US6566700B2 (en) | 2001-10-11 | 2003-05-20 | Ovonyx, Inc. | Carbon-containing interfacial layer for phase-change memory |
EP1440485B1 (en) | 2001-10-26 | 2006-06-21 | Arizona Board of Regents | Programmable surface control devices and method of using same |
US6545907B1 (en) | 2001-10-30 | 2003-04-08 | Ovonyx, Inc. | Technique and apparatus for performing write operations to a phase change material memory device |
US6576921B2 (en) | 2001-11-08 | 2003-06-10 | Intel Corporation | Isolating phase change material memory cells |
US6815818B2 (en) | 2001-11-19 | 2004-11-09 | Micron Technology, Inc. | Electrode structure for use in an integrated circuit |
US6791859B2 (en) | 2001-11-20 | 2004-09-14 | Micron Technology, Inc. | Complementary bit PCRAM sense amplifier and method of operation |
US6873538B2 (en) | 2001-12-20 | 2005-03-29 | Micron Technology, Inc. | Programmable conductor random access memory and a method for writing thereto |
US6667900B2 (en) | 2001-12-28 | 2003-12-23 | Ovonyx, Inc. | Method and apparatus to operate a memory cell |
US6625054B2 (en) | 2001-12-28 | 2003-09-23 | Intel Corporation | Method and apparatus to program a phase change memory |
US6512241B1 (en) | 2001-12-31 | 2003-01-28 | Intel Corporation | Phase change material memory device |
US6909656B2 (en) | 2002-01-04 | 2005-06-21 | Micron Technology, Inc. | PCRAM rewrite prevention |
US20030143782A1 (en) | 2002-01-31 | 2003-07-31 | Gilton Terry L. | Methods of forming germanium selenide comprising devices and methods of forming silver selenide comprising structures |
US6867064B2 (en) | 2002-02-15 | 2005-03-15 | Micron Technology, Inc. | Method to alter chalcogenide glass for improved switching characteristics |
US6791885B2 (en) | 2002-02-19 | 2004-09-14 | Micron Technology, Inc. | Programmable conductor random access memory and method for sensing same |
US7151273B2 (en) | 2002-02-20 | 2006-12-19 | Micron Technology, Inc. | Silver-selenide/chalcogenide glass stack for resistance variable memory |
US7087919B2 (en) * | 2002-02-20 | 2006-08-08 | Micron Technology, Inc. | Layered resistance variable memory device and method of fabrication |
WO2003079463A2 (en) | 2002-03-15 | 2003-09-25 | Axon Technologies Corporation | Programmable structure, an array including the structure, and methods of forming the same |
US6671710B2 (en) | 2002-05-10 | 2003-12-30 | Energy Conversion Devices, Inc. | Methods of computing with digital multistate phase change materials |
US6872963B2 (en) | 2002-08-08 | 2005-03-29 | Ovonyx, Inc. | Programmable resistance memory element with layered memory material |
US6918382B2 (en) | 2002-08-26 | 2005-07-19 | Energy Conversion Devices, Inc. | Hydrogen powered scooter |
US6864521B2 (en) * | 2002-08-29 | 2005-03-08 | Micron Technology, Inc. | Method to control silver concentration in a resistance variable memory element |
US7163837B2 (en) * | 2002-08-29 | 2007-01-16 | Micron Technology, Inc. | Method of forming a resistance variable memory element |
US6867996B2 (en) * | 2002-08-29 | 2005-03-15 | Micron Technology, Inc. | Single-polarity programmable resistance-variable memory element |
US6813178B2 (en) * | 2003-03-12 | 2004-11-02 | Micron Technology, Inc. | Chalcogenide glass constant current device, and its method of fabrication and operation |
-
2002
- 2002-04-12 US US10/120,521 patent/US7151273B2/en not_active Expired - Fee Related
-
2003
- 2003-02-14 AU AU2003217405A patent/AU2003217405A1/en not_active Abandoned
- 2003-02-14 WO PCT/US2003/004385 patent/WO2003071614A2/en active Application Filing
- 2003-02-14 JP JP2003570408A patent/JP2005518665A/en active Pending
- 2003-02-14 KR KR1020047012958A patent/KR100641973B1/en active IP Right Grant
- 2003-02-14 EP EP03713450A patent/EP1476909A2/en not_active Withdrawn
- 2003-02-14 CN CNB038088789A patent/CN100483767C/en not_active Expired - Fee Related
- 2003-02-20 TW TW092103517A patent/TW586117B/en not_active IP Right Cessation
-
2006
- 2006-05-31 US US11/443,266 patent/US7723713B2/en not_active Expired - Lifetime
- 2006-10-24 US US11/585,259 patent/US7646007B2/en not_active Expired - Lifetime
-
2009
- 2009-12-03 US US12/630,700 patent/US8080816B2/en not_active Expired - Fee Related
-
2010
- 2010-04-30 US US12/771,224 patent/US8263958B2/en not_active Expired - Lifetime
-
2011
- 2011-11-23 US US13/303,276 patent/US8466445B2/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3753110A (en) * | 1970-12-24 | 1973-08-14 | Sanyo Electric Co | Timing apparatus using electrochemical memory device |
US4115872A (en) * | 1977-05-31 | 1978-09-19 | Burroughs Corporation | Amorphous semiconductor memory device for employment in an electrically alterable read-only memory |
US4203123A (en) * | 1977-12-12 | 1980-05-13 | Burroughs Corporation | Thin film memory device employing amorphous semiconductor materials |
US5363329A (en) * | 1993-11-10 | 1994-11-08 | Eugeniy Troyan | Semiconductor memory device for use in an electrically alterable read-only memory |
US5920788A (en) * | 1995-06-07 | 1999-07-06 | Micron Technology, Inc. | Chalcogenide memory cell with a plurality of chalcogenide electrodes |
US5825046A (en) * | 1996-10-28 | 1998-10-20 | Energy Conversion Devices, Inc. | Composite memory material comprising a mixture of phase-change memory material and dielectric material |
US5952671A (en) * | 1997-05-09 | 1999-09-14 | Micron Technology, Inc. | Small electrode for a chalcogenide switching device and method for fabricating same |
EP1202285A2 (en) * | 2000-10-27 | 2002-05-02 | Matsushita Electric Industrial Co., Ltd. | Memory, writing apparatus, reading apparatus, writing method, and reading method |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004020683A3 (en) * | 2002-08-29 | 2005-10-20 | Micron Technology Inc | Silver selenide film stoichiometry and morphology control in sputter deposition |
WO2004020683A2 (en) * | 2002-08-29 | 2004-03-11 | Micron Technology, Inc. | Silver selenide film stoichiometry and morphology control in sputter deposition |
KR100741941B1 (en) | 2002-08-29 | 2007-07-24 | 마이크론 테크놀로지, 인크 | Silver selenide film stoichiometry and morphology control in sputter deposition |
JP2007533136A (en) * | 2004-04-07 | 2007-11-15 | マイクロン テクノロジー,インコーポレイテッド | Multilayer resistance variable memory device and manufacturing method thereof |
JP4751880B2 (en) * | 2004-04-07 | 2011-08-17 | マイクロン テクノロジー, インク. | Multilayer resistance variable memory device and manufacturing method thereof |
JP2011258971A (en) * | 2004-07-19 | 2011-12-22 | Micron Technology Inc | Resistance variable memory device and method of fabrication |
JP2006040946A (en) * | 2004-07-22 | 2006-02-09 | Sony Corp | Storage element |
WO2006034946A1 (en) * | 2004-09-27 | 2006-04-06 | Infineon Technologies Ag | Resistively switching semiconductor memory |
DE102004052645A1 (en) * | 2004-10-29 | 2006-05-04 | Infineon Technologies Ag | Non-volatile (sic) resistive storage cell with solid electrolyte matrix between first and second electrode as active layer useful in semiconductor technology has elements from groups IVb and Vb and transition metals in active layer |
DE102004052647B4 (en) * | 2004-10-29 | 2009-01-02 | Qimonda Ag | Method for improving the thermal properties of semiconductor memory cells in the manufacturing process and non-volatile, resistively switching memory cell |
US7483293B2 (en) | 2004-10-29 | 2009-01-27 | Infineon Technologies Ag | Method for improving the thermal characteristics of semiconductor memory cells |
DE102004052647A1 (en) * | 2004-10-29 | 2006-07-20 | Infineon Technologies Ag | Method for improving the thermal properties of semiconductor memory cells |
JP2006210718A (en) * | 2005-01-28 | 2006-08-10 | Renesas Technology Corp | Semiconductor device and manufacturing method therefor |
US7884346B2 (en) | 2006-03-30 | 2011-02-08 | Panasonic Corporation | Nonvolatile memory element and manufacturing method thereof |
US8227786B2 (en) | 2006-03-30 | 2012-07-24 | Panasonic Corporation | Nonvolatile memory element |
US8242479B2 (en) | 2007-11-15 | 2012-08-14 | Panasonic Corporation | Nonvolatile memory apparatus and manufacturing method thereof |
JP2011049581A (en) * | 2010-10-18 | 2011-03-10 | Sony Corp | Storage element and operating method of storage element |
Also Published As
Publication number | Publication date |
---|---|
US20030155589A1 (en) | 2003-08-21 |
TW200305885A (en) | 2003-11-01 |
KR20040080005A (en) | 2004-09-16 |
AU2003217405A8 (en) | 2003-09-09 |
US8466445B2 (en) | 2013-06-18 |
JP2005518665A (en) | 2005-06-23 |
KR100641973B1 (en) | 2006-11-06 |
US20100140579A1 (en) | 2010-06-10 |
US8080816B2 (en) | 2011-12-20 |
US8263958B2 (en) | 2012-09-11 |
US7723713B2 (en) | 2010-05-25 |
EP1476909A2 (en) | 2004-11-17 |
US20120068141A1 (en) | 2012-03-22 |
CN1647292A (en) | 2005-07-27 |
WO2003071614A3 (en) | 2004-04-15 |
CN100483767C (en) | 2009-04-29 |
US7151273B2 (en) | 2006-12-19 |
US20100219391A1 (en) | 2010-09-02 |
US20070007506A1 (en) | 2007-01-11 |
AU2003217405A1 (en) | 2003-09-09 |
US20070102691A1 (en) | 2007-05-10 |
TW586117B (en) | 2004-05-01 |
US7646007B2 (en) | 2010-01-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7151273B2 (en) | Silver-selenide/chalcogenide glass stack for resistance variable memory | |
US7087454B2 (en) | Fabrication of single polarity programmable resistance structure | |
US7087919B2 (en) | Layered resistance variable memory device and method of fabrication | |
US7692177B2 (en) | Resistance variable memory element and its method of formation | |
US6867064B2 (en) | Method to alter chalcogenide glass for improved switching characteristics | |
US20030173558A1 (en) | Methods and apparatus for resistance variable material cells | |
US7163837B2 (en) | Method of forming a resistance variable memory element | |
US7061004B2 (en) | Resistance variable memory elements and methods of formation | |
US7304368B2 (en) | Chalcogenide-based electrokinetic memory element and method of forming the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1020047012958 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003570408 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003713450 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1020047012958 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20038088789 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2003713450 Country of ref document: EP |