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) Fermi surfaces of the low-temperature (LT) phase, middle-temperature (MT) phase, and high temperature (HT) phase SnSe for [(a)–(c)] N-type and [(d)–(f)] P-type doping for carrier concentrations (in cm−3) of 1019 (left) and 1020 (right). Electron velocities (in m/s) are represented by a color scale. (Reprinted (figure) from Ref. [71] with permision of Copyright (2015) by American Physical Society).