摘要
The(GeTe)_(x)(AgSbTe_(2))_(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.
作者
Hongxia Liu
Xinyue Zhang
Wen Li
Yanzhong Pei
刘虹霞;张馨月;李文;裴艳中(School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Laboratory of Magnetic and Electric Functional Materials and the Applications,The Key Laboratory of Shanxi Province,Taiyuan 030024,China;Interdisciplinary Materials Research Center,School of Materials Science and Engineering,Tongji University,Shanghai 201804,China)
基金
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)
the project supported by State Key Laboratory of Advanced Technology for Materials Synthesis and Processing(Wuhan University of Technology,No.2022-KF-32)。
