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) Band structures along the high-symmetry k-points Γ, X, S, and Y, and density of states of (a) SnSe, (b) SnS, (c) GeSe, and (d) GeS.[29] (Reprinted from Ref. [29]).