摘要
综述近年来half-Heusler(HH)热电材料的研究进展,包括传统18价电子HH材料体系以及最近开发的新型HH热电材料,简要介绍提高HH材料热电性能的几种策略,重点讨论能带合并(band convergence)策略在热电性能优化方面的应用。指出今后在HH热电材料研究中需要关注的几个方面,如非18价电子HH化合物作为热电材料的实验研究、材料能带结构随合金化及温度的变化规律以及多能带输运模型的建立等。
In this paper, we reviewed the research progress of half - Heusler （HH） thermoelectric （TE） materials, including traditional HH thermoelectric materials with 18 valence electrons in the crystal structure, as well as new HH thermoelectric materials. We briefly introduced several strategies to improve the TE performance of HHs, and focus on the band convergence strategy applied in TE property optimization. According to the existing research insufficiency, we proposed several aspects that need careful attention in TE material research in the future, such as the thermoelectric experimental research of HHs with valence electrons unequal to 18, the variation of band structure with alloying and temperature, and the establishment of a multiple band transport model which suitable for HH thermoelectric materials.
出处
《西华大学学报（自然科学版）》
CAS
2016年第4期1-7,共7页
Journal of Xihua University:Natural Science Edition
基金
四川省教育厅科研项目(14ZB0133
16ZB0156)
教育部春晖计划项目(Z2014042
Z2015094)
西华大学重点科研基金资助(Z1322332)
特种材料及制备技术省高校重点实验室开放课题(szjj2016-034)
