稀土元素掺杂在提升热电材料性能中的研究进展

doi:10.11896/cldb.25070127

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Abstract Thermoelectric materials are new energy materials capable of converting thermal energy into electrical energy, offering a wide array of promi-sing applications. Thermoelectric performance is characterized by the figure of merit (ZT), which is inherently limited by the interdependent electrical conductivity, thermal conductivity, and Seebeck coefficient. Each of these properties is influenced by the internal microstructure of the material, the transport behavior of charge carriers, and phonon scattering. Numerous studies have demonstrated that trace element doping is an effective strategy for enhancing the thermoelectric performance. This article reviews the applications and microscopic mechanisms of doping with rare earth elements to improve the properties of various thermoelectric materials, including Mg₃Sb₂-based Zintl phases, CoSb₃-based skutterudites, BiCuSeO-based oxides, MgAgSb-based Half-Heusler alloys, SrTiO₃-based perovskites, and Zn₄Sb₃-based thermoelectric systems. Owing to their distinctive 4f orbital electrons, rare earth elements enable carrier concentration optimization, strong phonon scattering, structural regulation, electroacoustic decoupling, and band convergence. These mechanisms collectively contribute to enhanced thermoelectric properties, thereby providing a theoretical foundation for further research and practical applications in the field.

Key words： rare earth doping thermoelectric material electrical transport characteristic heat transfer characteristic

Published: Online: 2025-10-27

CLC number:

O469

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	Articles by authors
	WANG Qingqing
	LI Di
	ZHOU Jiafeng
	MENG Weili
	ZHU Ankang
	SHAO Jing

Cite this article:

WANG Qingqing,LI Di,ZHOU Jiafeng, et al. Research Progress on Rare Earth Element Doping in Improving the Performance of Thermoelectric Materials[J]. Materials Reports, 2025, 39(20): 25070127-8.

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https://www.mater-rep.com/EN/10.11896/cldb.25070127 OR https://www.mater-rep.com/EN/Y2025/V39/I20/25070127

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