角分辨光电子能谱在热电材料研究中的应用  

Application of angle-resolved photoemission spectroscopy in thermoelectric materials research

作　　者：胡学高 冯宝杰 Xuegao Hu;Baojie Feng(Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院物理研究所,北京100190 [2]中国科学院大学物理科学学院,北京100049

出　　处：《科学通报》2025年第6期705-717,共13页Chinese Science Bulletin

基　　金：北京市自然科学基金(JQ23001);国家自然科学基金(12374197)资助。

摘　　要：热电材料因其能够实现热能与电能的直接转换,在温差发电与制冷技术中具有重要应用.热电材料的电输运性能由其能带结构决定,角分辨光电子能谱(angle-resolved photoemission spectroscopy,ARPES)是最直观探测能带结构的技术.本文综述了ARPES技术在热电材料研究中的应用,探讨了ARPES如何揭示材料的能带结构,从而优化其热电性能.首先介绍了热电材料的基本参数和ARPES的基本原理,随后详细介绍了ARPES技术在热电材料研究中的几个典型应用案例,最后给出总结和展望,期待能为两个领域的交叉提供一些参考思路.Thermoelectric materials,which enable the direct conversion of thermal energy into electrical energy,play a significant role in thermoelectric power generation and cooling technologies.The electrical transport properties of thermoelectric materials are determined by their band structure,and angle-resolved photoemission spectroscopy(ARPES)is the most intuitive technique for probing band structures.To date,while numerous review articles have separately discussed ARPES technology and thermoelectric materials,there is an absence of review focusing on the application of ARPES technology in thermoelectric materials research.This review begins with a brief introduction to the basic parameters of thermoelectric materials and the impact of their band structure on transport properties.It then introduces the basic principles and sample preparation requirements of ARPES technology.Following this,detailed discussions of several typical applications of ARPES technology in the study of thermoelectric materials are presented.Finally,the review provides a summary and outlook.This review comprehensively explores the application of angle-resolved photoemission spectroscopy(ARPES)technology in the study of thermoelectric materials,highlighting the importance of this technique for understanding the relationship between material band structure and thermoelectric performance.Utilizing ARPES technology allows for precise measurements of the Fermi level position,the shape of individual bands,and the evolution trends of multiple bands,which are crucial for optimizing the performance of thermoelectric materials.The review also discusses the effects of temperature,doping,and defects on the band structure,offering a new perspective for the regulation of thermoelectric performance.Additionally,the review introduces the potential impact of band folding,van Hove singularities,and two-dimensional electron gases on thermoelectric performance.Since the discovery of the Seebeck effect,the study of thermoelectric materials has spanned two centuries.

关 键 词：热电材料 角分辨光电子能谱 能带结构 输运性质 

分 类 号：TB34[一般工业技术—材料科学与工程] O657.62[理学—分析化学]