Enhanced thermoelectric performance of CuGaTe2 based composites incorporated with nanophase Cu2Se

Jian Zhang; Xiaoying Qin; Di Li; Hongxing Xin; Chunjun Song; Liangliang Li; Xiaoguang Zhu; Zhaoming Wang; Guanglei Guo; Ling Wang

doi:10.1039/C3TA15211A

Enhanced thermoelectric performance of CuGaTe₂ based composites incorporated with nanophase Cu₂Se

Jian Zhang,*^a Xiaoying Qin,*^a Di Li,^a Hongxing Xin,^a Chunjun Song,^a Liangliang Li,^a Xiaoguang Zhu,^a Zhaoming Wang,^a Guanglei Guo^a and Ling Wang^a

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* Corresponding authors

^a Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, 230031 Hefei, P.R. China
E-mail: zhangjian@issp.ac.cn, xyqin@issp.ac.cn

Abstract

We investigate the thermoelectric properties of CuGaTe₂/xCu₂Se composites in a moderate temperature range. The results indicate that the introduction of Cu₂Se remarkably lowers the thermal conductivity of the composite system. Especially, the thermal conductivity of CuGaTe₂/3 vol% Cu₂Se decreases to 0.54 W m⁻¹ K⁻¹ at 859 K, which allows its ZT to reach 1.2 at 834 K.

Journal of Materials Chemistry A

Enhanced thermoelectric performance of CuGaTe₂ based composites incorporated with nanophase Cu₂Se

Abstract

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Enhanced thermoelectric performance of CuGaTe₂ based composites incorporated with nanophase Cu₂Se

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