Effects of Mn substitution on thermoelectric properties of CuIn1-xMnxTe2

doi:10.1088/1674-1056/26/9/097201

中国物理B ›› 2017, Vol. 26 ›› Issue (9): 97201-097201.doi: 10.1088/1674-1056/26/9/097201

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Effects of Mn substitution on thermoelectric properties of CuIn_1-xMn_xTe₂

Pengfei Luo(罗鹏飞), Li You(游理), Jiong Yang(杨炯), Juanjuan Xing(邢娟娟), Jiye Zhang(张继业), Chenyang Wang(王晨阳), Xinluo Zhao(赵新洛), Jun Luo(骆军), Wenqing Zhang(张文清)

1 Department of Physics, Institute of Low-Dimensional Carbons and Device Physics, Shanghai University, Shanghai 200444, China;
2 Materials Genome Institute, Shanghai University, Shanghai 200444, China;
3 School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China

收稿日期:2017-05-08 修回日期:2017-06-10 出版日期:2017-09-05 发布日期:2017-09-05
通讯作者: Jun Luo, Wenqing Zhang E-mail:junluo@shu.edu.cn;wqzhang@t.shu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Nos. 51632005 and 51371194) and National Basic Research Program of China (Grant No. 2013CB632500).

Effects of Mn substitution on thermoelectric properties of CuIn_1-xMn_xTe₂

Pengfei Luo(罗鹏飞)^1,2, Li You(游理)³, Jiong Yang(杨炯)², Juanjuan Xing(邢娟娟)³, Jiye Zhang(张继业)³, Chenyang Wang(王晨阳)³, Xinluo Zhao(赵新洛)¹, Jun Luo(骆军)³, Wenqing Zhang(张文清)^2,3

1 Department of Physics, Institute of Low-Dimensional Carbons and Device Physics, Shanghai University, Shanghai 200444, China;
2 Materials Genome Institute, Shanghai University, Shanghai 200444, China;
3 School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China

Received:2017-05-08 Revised:2017-06-10 Online:2017-09-05 Published:2017-09-05
Contact: Jun Luo, Wenqing Zhang E-mail:junluo@shu.edu.cn;wqzhang@t.shu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Nos. 51632005 and 51371194) and National Basic Research Program of China (Grant No. 2013CB632500).

摘要/Abstract

摘要：

CuIn_1-xMn_xTe₂ samples have been synthesized by a melt-annealing method. The x-ray powder diffraction (XRD) analysis shows that the CuIn_1-xMn_xTe₂ samples crystallize in the chalcopyrite phase. Mn doping can effectively optimize the electrical properties and accordingly improve the power factor. The room temperature electrical conductivity of doped CuInTe₂ increases by several orders of magnitude due to substituting In with Mn. In addition, a large reduction in thermal conductivity is achieved through the enhanced phonon scattering via Mn-related point defects and precipitates. Therefore, an enhanced average ZT value up to 0.34 is achieved for sample CuIn_0.925Mn_0.075Te₂, which is 41% higher than that of the pristine CuInTe₂.

关键词: thermoelectrics, chalcopyrite, CuInTe₂, Mn doping

Abstract:

Key words: thermoelectrics, chalcopyrite, CuInTe₂, Mn doping

中图分类号: (Thermoelectric and thermomagnetic effects)

72.15.Jf

74.25.fg (Thermoelectric effects)

罗鹏飞, 游理, 杨炯, 邢娟娟, 张继业, 王晨阳, 赵新洛, 骆军, 张文清. Effects of Mn substitution on thermoelectric properties of CuIn_1-xMn_xTe₂[J]. 中国物理B, 2017, 26(9): 97201-097201.

Pengfei Luo(罗鹏飞), Li You(游理), Jiong Yang(杨炯), Juanjuan Xing(邢娟娟), Jiye Zhang(张继业), Chenyang Wang(王晨阳), Xinluo Zhao(赵新洛), Jun Luo(骆军), Wenqing Zhang(张文清). Effects of Mn substitution on thermoelectric properties of CuIn_1-xMn_xTe₂[J]. Chin. Phys. B, 2017, 26(9): 97201-097201.

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Effects of Mn substitution on thermoelectric properties of CuIn_1-xMn_xTe₂

Effects of Mn substitution on thermoelectric properties of CuIn_1-xMn_xTe₂

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