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直拉SiGe合金的高温Seebeck系数

Seebeck Coefficient of Czochralski SiGe Alloy at High Temperatures
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摘要 为了更好地发掘SiGe合金的热电转换性能的潜力,对几组不同的SiGe合金样品进行了性能测试,主要是对不同参数样品的Seebeck系数值进行对比,从而得出热电性能的最佳组合.不仅比较了不同组分、不同晶向和不同导电类型样品的Seebeck系数,还对单晶SiGe合金和多晶SiGe合金的热电性能进行了对比分析.发现SiGe合金的Seebeck系数具有明显的各向异性,(100)晶向的Seebeck系数明显优于(111》晶向.Seebeck系数与测试温度具有非常密切的依赖关系,随着温度的变化所有样品均在700~900K的温度范围内出现了峰值.此外还对SiGe合金的Seebeck系数与组分的关系进行了详细描述.
出处 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2007年第z1期16-19,共4页 半导体学报(英文版)
基金 河北省自然科学基金资助项目(批准号:E2004000061)Project supported by the Hebei Natural Science Foundation (No. E2004000061)
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