Complex alloying effect on thermoelectric transport properties of Cu2Ge(Se1−xTex)3*

Project supported by the National Natural Science Foundation of China (Grant Nos. 51672270, 11674040, and 11404044), the Key Research Program of Frontier Sciences, Chinese Academy of Sciences (Grant No. QYZDB-SSW-SLH016), and the Project for Fundamental and Frontier Research in Chongqing City (Grant No. CSTC2015JCYJBX0026).

Wang Ruifeng1, 3, Dai Lu1, 3, Yan Yanci1, 2, Peng Kunling1, 2, Lu Xu2, Zhou Xiaoyuan2, Wang Guoyu1, 3, †
       

SEM images for Cu2GeSe2.7Te0.3 [(a) and (b)] and Cu2GeSe1.8Te1.2 [(c) and (d)].