摘要
半导体材料的热电效应在发电方面有着巨大的应用潜力,但如何提高材料的热电转换效 率是目前人们研究探讨的热点问题.SiGe 材料的热电转换最大优值 = 1,实际应用中仅能达到 0.68.论述了目前提高材料温差电优值( )的主要途径,重点介绍了 SiGe 合金作为热电转换材料的主要特点,在热电应用中当前的主要研究成果.
The thermoelectric effect of semiconductor materials has greatly potential application prospect in power generation, but how to improve the conversion efficiency is an attractive problem. The max figure of merit of SiGe alloys is should be 1, but it only gets to 0.68 in practice. In this paper, we discuss the theoretical approach to improving thermoelectricity of materials, introduce the character and the researched result of SiGe alloysin thermoe- lectric application.
出处
《河北工业大学学报》
CAS
2004年第4期31-35,共5页
Journal of Hebei University of Technology
基金
河北省自然科学基金资助项目(E2004000061)
关键词
SIGE合金
热电转换
温差电优值
热导率
电导率
塞贝克系数
SiGealloys
thermoelectricgeneration
figureofmerit
thermal conductivity
electrical conductivity
seebeck coefficient
