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Science China Materials

, Volume 62, Issue 1, pp 8–24 | Cite as

Copper chalcogenide thermoelectric materials

  • Tian-Ran Wei (魏天然)
  • Yuting Qin (覃玉婷)
  • Tingting Deng (邓婷婷)
  • Qingfeng Song (宋庆峰)
  • Binbin Jiang (江彬彬)
  • Ruiheng Liu (刘睿恒)
  • Pengfei Qiu (仇鹏飞)
  • Xun Shi (史迅)Email author
  • Lidong Chen (陈立东)
Reviews

Abstract

Cu-based chalcogenides have received increasing attention as promising thermoelectric materials due to their high efficiency, tunable transport properties, high elemental abundance and low toxicity. In this review, we summarize the recent research progress on this large family compounds covering diamond-like chalcogenides and liquid-like Cu2X (X=S, Se, Te) binary compounds as well as their multinary derivatives. These materials have the general features of two sublattices to decouple electron and phonon transport properties. On the one hand, the complex crystal structure and the disordered or even liquid-like sublattice bring about an intrinsically low lattice thermal conductivity. On the other hand, the rigid sublattice constitutes the charge-transport network, maintaining a decent electrical performance. For specific material systems, we demonstrate their unique structural features and outline the structure-performance correlation. Various design strategies including doping, alloying, band engineering and nanostructure architecture, covering nearly all the material scale, are also presented. Finally, the potential of the application of Cu-based chalcogenides as high-performance thermoelectric materials is briefly discussed from material design to device development.

Keywords

thermoelectric Cu-based chalcogenides sublattice transport properties 

铜基硫族化合物热电材料

摘要

铜基硫族化合物因其高性能、可调的输运性质、高丰度和低毒性, 被认为是很有前景的新型热电材料, 引起了研究者的广泛关注.本文总结了近年来铜基热电材料的研究进展, 包括类金刚石结构材料、声子液体二元及多元化合物等. 本文首先总体介绍了两套亚晶格的基本特征及其对热学、电学性质的影响: 一方面, 复杂晶体结构和无序、甚至液态化的亚晶格导致极低的热导率; 另一方面, 刚性亚晶格构成电荷传输通道, 保证了较高的电学性能. 然后, 本文针对特定的几类材料体系, 详细介绍了其典型结构特征与“结构-性能”构效关系, 以及掺杂、固溶、能带结构调控和纳米结构设计等多尺度优化手段. 最后, 本文从材料研发和器件研制的角度评述了铜基硫族化合物作为热电材料的应用前景及相关进展.

Notes

Acknowledgements

This review is supported by the National Key Research and Development Program of China (2018YFB0703600), the National Natural Science Foundation of China (51625205), the Key Research Program of Chinese Academy of Sciences (KFZD-SW-421), Program of Shanghai Subject Chief Scientist (16XD1403900), Youth Innovation Promotion Association, CAS (2016232) and Shanghai Sailing Program (18YF1426700).

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Tian-Ran Wei (魏天然)
    • 1
  • Yuting Qin (覃玉婷)
    • 1
    • 2
  • Tingting Deng (邓婷婷)
    • 1
    • 2
  • Qingfeng Song (宋庆峰)
    • 1
    • 2
  • Binbin Jiang (江彬彬)
    • 1
    • 2
  • Ruiheng Liu (刘睿恒)
    • 1
  • Pengfei Qiu (仇鹏飞)
    • 1
  • Xun Shi (史迅)
    • 1
    Email author
  • Lidong Chen (陈立东)
    • 1
  1. 1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of CeramicsChinese Academy of SciencesShanghaiChina
  2. 2.University of Chinese Academy of SciencesBeijingChina

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