Patent ID: 7952015

Claim:
A thermoelectrically active p- or n-type semiconductor material consisting of: a compound of the general formula (I) (PbTe) 1−x (Sn Q Sb R Te 5 ) x (I) wherein 0.01≦x≦0.5, 1.5≦Q≦2.2, and 1.5≦R≦2.2, and 0-10% by weight of a dopant, wherein the dopant is selected from the group consisting of Na, K, Mg, Mn, Fe, Co, Ni, Tl, Si, Ge, As, Bi, S, Se, Pb-halides, Sb-halides, Bi-halides, Sb-tellurides, Tl-tellurides, and mixtures thereof.