中国物理B ›› 2017, Vol. 26 ›› Issue (10): 107202-107202.doi: 10.1088/1674-1056/26/10/107202

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

Optimize the thermoelectric performance of CdO ceramics by doping Zn

Xin-Yu Zha(查欣雨), Lin-Jie Gao(高琳洁), Hong-Chang Bai(白洪昌), Jiang-Long Wang(王江龙), Shu-Fang Wang(王淑芳)   

  1. Hebei Key Laboratory of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding 071002, China
  • 收稿日期:2017-04-19 修回日期:2017-07-26 出版日期:2017-10-05 发布日期:2017-10-05
  • 通讯作者: Lin-Jie Gao, Jiang-Long Wang E-mail:LinjieGao@hotmail.com;jlwang@hbu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 51372064), the Natural Science Foundation of Hebei Province, China (Grant Nos. A2014201176 and E2017201209), the Outstanding Doctoral Cultivation Project of Hebei University (Grant No. YB201502), and the Hebei Province Universities Science and Technology Program funded by the Hebei Provincial Education Department, China (Grant Nos. ZD2014018 and QN2017017).

Optimize the thermoelectric performance of CdO ceramics by doping Zn

Xin-Yu Zha(查欣雨), Lin-Jie Gao(高琳洁), Hong-Chang Bai(白洪昌), Jiang-Long Wang(王江龙), Shu-Fang Wang(王淑芳)   

  1. Hebei Key Laboratory of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding 071002, China
  • Received:2017-04-19 Revised:2017-07-26 Online:2017-10-05 Published:2017-10-05
  • Contact: Lin-Jie Gao, Jiang-Long Wang E-mail:LinjieGao@hotmail.com;jlwang@hbu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 51372064), the Natural Science Foundation of Hebei Province, China (Grant Nos. A2014201176 and E2017201209), the Outstanding Doctoral Cultivation Project of Hebei University (Grant No. YB201502), and the Hebei Province Universities Science and Technology Program funded by the Hebei Provincial Education Department, China (Grant Nos. ZD2014018 and QN2017017).

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摘要：

The thermoelectric performance of CdO ceramics was enhanced by simultaneously optimizing the electrical and thermal transport properties via a small amount of Zn doping (≤ 3%). The introduction of Zn can obviously increase the electrical conductivity of CdO due to the simultaneous increase of carrier concentration and mobility, and eventually results in an improvement in power factor. Zn doping is also effective in suppressing the thermal conductivity of CdO because of stronger phonon scatterings from point defects, Zn-riched second phase, and grain boundaries. A best ZT of about 0.45 has been achieved in the Cd1-xZnxO systems at about 1000 K, which is comparable to the highest values reported for other n-type oxide TE materials.

关键词: thermoelectric properties, CdO, Zn doping, power factor, thermal conductivity

Abstract:

The thermoelectric performance of CdO ceramics was enhanced by simultaneously optimizing the electrical and thermal transport properties via a small amount of Zn doping (≤ 3%). The introduction of Zn can obviously increase the electrical conductivity of CdO due to the simultaneous increase of carrier concentration and mobility, and eventually results in an improvement in power factor. Zn doping is also effective in suppressing the thermal conductivity of CdO because of stronger phonon scatterings from point defects, Zn-riched second phase, and grain boundaries. A best ZT of about 0.45 has been achieved in the Cd1-xZnxO systems at about 1000 K, which is comparable to the highest values reported for other n-type oxide TE materials.

Key words: thermoelectric properties, CdO, Zn doping, power factor, thermal conductivity

中图分类号:  (Transition-metal compounds)

  • 72.80.Ga
72.20.Pa (Thermoelectric and thermomagnetic effects) 81.20.Ev (Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)