Enhanced thermoelectric performance of CoSbS_(0.85)Se_(0.15) by point defect

查看全文 作　　者：Shan-Shan [1]Zhang;Ding-Feng [2]Yang;Nusrat [1]Shaheen;Xing-Chen [1]Shen;Dan-Dan [1]Xie;Yan-Ci [1]Yan;Xu [1]Lu;Xiao-Yuan [1]Zhou

机构地区：[1]Department of Applied Physics, Chongqing University;[2]Institute of Microstructure and Properties of Advanced Materials,Beijing University of Technology

出　　处：《Rare Metals》索引2018年第37卷第4期,共7页

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 11344010. 11404044 and 51472036);the Fundamental Research Funds for the Central Universities (No. 106112016CDJZR308808) 摘　　要：In this study, we report the effect of Zn doping on the thermoelectric properties of Co_(1-x)Zn_xSbS_(0.85)Se_(0.15)solid solutions(x = 0, 0.02, 0.05, 0.08). The results show the dimensionless figure of merit(zT) increases from 0.17 to 0.34 at 875 K for Co_(0.95)Zn_(0.05)SbS_(0.85)Se_(0.15) sample, due to the noticeable decrease in the lattice thermal conductivity by introducing point defect, which is further confirmed by an analysis based on the Debye-CallawayKlemens model. Meanwhile, the thermoelectric power factor is maintained at high temperatures. This work highlights the important role of point defect in improving the thermoelectric performance of CoSbS-based compounds. 关键词：热电性能电导率高温度混合物

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Enhanced thermoelectric performance of CoSbS_(0.85)Se_(0.15) by point defect

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