中国物理B ›› 2022, Vol. 31 ›› Issue (4): 47401-047401.doi: 10.1088/1674-1056/ac3cae

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

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Advances in thermoelectric (GeTe)x(AgSbTe2)100-x

Hongxia Liu(刘虹霞)1,2, Xinyue Zhang(张馨月)3, Wen Li(李文)3,†, and Yanzhong Pei(裴艳中)3,‡   

  1. 1 School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;
    2 Laboratory of Magnetic and Electric Functional Materials and the Applications, The Key Laboratory of Shanxi Province, Taiyuan 030024, China;
    3 Interdisciplinary Materials Research Center, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
  • 收稿日期:2021-10-11 修回日期:2021-11-16 接受日期:2021-11-24 出版日期:2022-03-16 发布日期:2022-03-21
  • 通讯作者: Wen Li, Yanzhong Pei E-mail:liwen@tongji.edu.cn;yanzhong@tongji.edu.cn
  • 基金资助:
    This work is supported by the National Natural Science Foundation of China (Grant Nos. T2125008, 92163203, and 52022068), the Innovation Program of Shanghai Municipal Education Commission, the Hefei National Laboratory for Physical Sciences at the Microscale (Grant No. KF2020007), the Shanghai Natural Science Foundation (Grant No. 19ZR1459900), Taiyuan University of Science and Technology Scientific Research Initial Funding (No. 20222002), and the project supported by State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology, No. 2022-KF-32).

Advances in thermoelectric (GeTe)x(AgSbTe2)100-x

Hongxia Liu(刘虹霞)1,2, Xinyue Zhang(张馨月)3, Wen Li(李文)3,†, and Yanzhong Pei(裴艳中)3,‡   

  1. 1 School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;
    2 Laboratory of Magnetic and Electric Functional Materials and the Applications, The Key Laboratory of Shanxi Province, Taiyuan 030024, China;
    3 Interdisciplinary Materials Research Center, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
  • Received:2021-10-11 Revised:2021-11-16 Accepted:2021-11-24 Online:2022-03-16 Published:2022-03-21
  • Contact: Wen Li, Yanzhong Pei E-mail:liwen@tongji.edu.cn;yanzhong@tongji.edu.cn
  • Supported by:
    This work is supported by the National Natural Science Foundation of China (Grant Nos. T2125008, 92163203, and 52022068), the Innovation Program of Shanghai Municipal Education Commission, the Hefei National Laboratory for Physical Sciences at the Microscale (Grant No. KF2020007), the Shanghai Natural Science Foundation (Grant No. 19ZR1459900), Taiyuan University of Science and Technology Scientific Research Initial Funding (No. 20222002), and the project supported by State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology, No. 2022-KF-32).

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摘要： The (GeTe)x(AgSbTe2)100-x alloys, also called TAGS-x in short, have long been demonstrated as a promising candidate for thermoelectric applications with successful services as the p-type leg in radioisotope thermoelectric generators for space missions. This largely stems from the complex band structure for a superior electronic performance and strong anharmonicity for a low lattice thermal conductivity. Utilization of the proven strategies including carrier concentration optimization, band and defects engineering, an extraordinary thermoelectric figure of merit, zT, has been achieved in TAGS-based alloys. Here, crystal structure, band structure, microstructure, synthesis techniques and thermoelectric transport properties of TAGS-based alloys, as well as successful strategies for manipulating the thermoelectric performance, are surveyed with opportunities for further advancements. These strategies involved are believed to be in principle applicable for advancing many other thermoelectrics.

关键词: thermoelectric, TAGS, band structure, lattice thermal conductivity, thermoelectric figure of merit

Abstract: The (GeTe)x(AgSbTe2)100-x alloys, also called TAGS-x in short, have long been demonstrated as a promising candidate for thermoelectric applications with successful services as the p-type leg in radioisotope thermoelectric generators for space missions. This largely stems from the complex band structure for a superior electronic performance and strong anharmonicity for a low lattice thermal conductivity. Utilization of the proven strategies including carrier concentration optimization, band and defects engineering, an extraordinary thermoelectric figure of merit, zT, has been achieved in TAGS-based alloys. Here, crystal structure, band structure, microstructure, synthesis techniques and thermoelectric transport properties of TAGS-based alloys, as well as successful strategies for manipulating the thermoelectric performance, are surveyed with opportunities for further advancements. These strategies involved are believed to be in principle applicable for advancing many other thermoelectrics.

Key words: thermoelectric, TAGS, band structure, lattice thermal conductivity, thermoelectric figure of merit

中图分类号:  (Thermoelectric effects)

  • 74.25.fg
74.25.fc (Electric and thermal conductivity) 74.25.F- (Transport properties) 81.20.-n (Methods of materials synthesis and materials processing)