A thermoelectric composition comprises a material represented by the general formula description="In-line Formulae" end="lead"(AgaX1−a)1±x(SnbPb1−b)mM′1−yQ2+m description="In-line Formulae" end="tail" wherein X is Na, K, or a combination of Na and K in any proportion; M′ is a trivalent element...http://www.google.com/patents/US20050076944?utm_source=gb-gplus-sharePatent US20050076944 - Silver-containing p-type semiconductor
