Journal of Hebei University(Natural Science Edition) ›› 2021, Vol. 41 ›› Issue (4): 349-361.DOI: 10.3969/j.issn.1000-1565.2021.04.003

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Research progress of electrical transport properties of Bi2Te3-based thermoelectric materials

WANG Qing,LIU Ziyang,ZHAO Shasha,LI Zhiliang   

  1. Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province, College of Physics Science and Technology, Hebei University, Baoding 071002, China
  • Received:2021-04-20 Published:2021-09-03

Abstract: Bi2Te3-based compound is one of the representative materials in the field of thermoelectric(TE), which are widely used in waste heat power generation, solid-state refrigeration, temperature detection etc. Bi2Te3-based materials have complex band structures.It is expected that the TE performance of Bi2Te3-based materials can be optimized by strong spin orbit and band inversion.By analyzing and comparing the band structure calculation datas and some experimental results of Bi2Te3-based materials in recent years, the characteristics of the band structure of Bi2Te3, N-type Bi2Te3-xSex and P-type Bi2-xSbxTe3materials, and the key factors affecting the band structure and the electrical transport performance are summarized. The conclusions will provide a theoretical support for improving the TE performance of Bi2Te3-based materials.

Key words: thermoelectric materials, Bi2Te3, band structure, electrical transport performance

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