中国物理B ›› 2018, Vol. 27 ›› Issue (4): 48403-048403.doi: 10.1088/1674-1056/27/4/048403

所属专题: TOPICAL REVIEW — Recent advances in thermoelectric materials and devices

• TOPIC REVIEW—Thermal and thermoelectric properties of nano materials • 上一篇    下一篇

Fundamental and progress of Bi2Te3-based thermoelectric materials

Min Hong(洪敏), Zhi-Gang Chen(陈志刚), Jin Zou(邹进)   

  1. 1. Centre of Future Materials, the University of Southern Queensland(USQ), Springfield, Queensland 4300, Australia;
    2. Materials Engineering, University of Queensland, Brisbane, Queensland 4072, Australia;
    3. Centre for Microscopy and Microanalysis, University of Queensland, Brisbane, Queensland 4072, Australia
  • 收稿日期:2018-01-23 修回日期:2018-03-02 出版日期:2018-04-05 发布日期:2018-04-05
  • 通讯作者: Zhi-Gang Chen, Jin Zou E-mail:zhigang.chen@usq.edu.au;j.zou@uq.edu.au
  • 基金资助:

    Project supported by the Australian Research Council. Zhi-Gang Chen thanks the USQ start-up grant and strategic research grant.

Fundamental and progress of Bi2Te3-based thermoelectric materials

Min Hong(洪敏)1,2, Zhi-Gang Chen(陈志刚)1,2, Jin Zou(邹进)2,3   

  1. 1. Centre of Future Materials, the University of Southern Queensland(USQ), Springfield, Queensland 4300, Australia;
    2. Materials Engineering, University of Queensland, Brisbane, Queensland 4072, Australia;
    3. Centre for Microscopy and Microanalysis, University of Queensland, Brisbane, Queensland 4072, Australia
  • Received:2018-01-23 Revised:2018-03-02 Online:2018-04-05 Published:2018-04-05
  • Contact: Zhi-Gang Chen, Jin Zou E-mail:zhigang.chen@usq.edu.au;j.zou@uq.edu.au
  • Supported by:

    Project supported by the Australian Research Council. Zhi-Gang Chen thanks the USQ start-up grant and strategic research grant.

摘要:

Thermoelectric materials, enabling the directing conversion between heat and electricity, are one of the promising candidates for overcoming environmental pollution and the upcoming energy shortage caused by the over-consumption of fossil fuels. Bi2Te3-based alloys are the classical thermoelectric materials working near room temperature. Due to the intensive theoretical investigations and experimental demonstrations, significant progress has been achieved to enhance the thermoelectric performance of Bi2Te3-based thermoelectric materials. In this review, we first explored the fundamentals of thermoelectric effect and derived the equations for thermoelectric properties. On this basis, we studied the effect of material parameters on thermoelectric properties. Then, we analyzed the features of Bi2Te3-based thermoelectric materials, including the lattice defects, anisotropic behavior and the strong bipolar conduction at relatively high temperature. Then we accordingly summarized the strategies for enhancing the thermoelectric performance, including point defect engineering, texture alignment, and band gap enlargement. Moreover, we highlighted the progress in decreasing thermal conductivity using nanostructures fabricated by solution grown method, ball milling, and melt spinning. Lastly, we employed modeling analysis to uncover the principles of anisotropy behavior and the achieved enhancement in Bi2Te3, which will enlighten the enhancement of thermoelectric performance in broader materials

关键词: thermoelectric, Bi2Te3-based alloys, electron transports, phonon scatterings

Abstract:

Thermoelectric materials, enabling the directing conversion between heat and electricity, are one of the promising candidates for overcoming environmental pollution and the upcoming energy shortage caused by the over-consumption of fossil fuels. Bi2Te3-based alloys are the classical thermoelectric materials working near room temperature. Due to the intensive theoretical investigations and experimental demonstrations, significant progress has been achieved to enhance the thermoelectric performance of Bi2Te3-based thermoelectric materials. In this review, we first explored the fundamentals of thermoelectric effect and derived the equations for thermoelectric properties. On this basis, we studied the effect of material parameters on thermoelectric properties. Then, we analyzed the features of Bi2Te3-based thermoelectric materials, including the lattice defects, anisotropic behavior and the strong bipolar conduction at relatively high temperature. Then we accordingly summarized the strategies for enhancing the thermoelectric performance, including point defect engineering, texture alignment, and band gap enlargement. Moreover, we highlighted the progress in decreasing thermal conductivity using nanostructures fabricated by solution grown method, ball milling, and melt spinning. Lastly, we employed modeling analysis to uncover the principles of anisotropy behavior and the achieved enhancement in Bi2Te3, which will enlighten the enhancement of thermoelectric performance in broader materials

Key words: thermoelectric, Bi2Te3-based alloys, electron transports, phonon scatterings

中图分类号:  (Thermoelectric, electrogasdynamic and other direct energy conversion)

  • 84.60.Rb
74.25.fc (Electric and thermal conductivity) 72.10.-d (Theory of electronic transport; scattering mechanisms) 61.72.Nn (Stacking faults and other planar or extended defects)