Recent advances in non-Pb-based group-IV chalcogenides for environmentally-friendly thermoelectric materials*

Project supported by the National Natural Science Foundation of China (Grant Nos. 51472052 and U1601213).

Du Bing-Sheng1, Jian Ji-Kang1, †, Liu Hai-Tao1, 2, Liu Jiao1, Qiu Lei1
       

(color online) Temperature-dependent (a) zT values, (b) conductivities, (c) thermal conductivities, and (d) Seebeck coefficients of GeTe(GeTe,[54] In0.02Ge0.98Te,[56] and GeTe:Bi[57]), (GeTe)80(AgSbSe2)20,[54] Ge–Sb–Te alloys (Ge0.9Sb0.1Te,[25] and Ge0.9Sb0.1Te0.9Se0.05S0.05[55]), and Ge–Pb–Te materials (Ge0.85(Pb0.9Yb0.1)0.15Te[22]).