CAJ | 학술논문

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.
위료경호지발굴SiGe합금적열전전환성능적잠력,대궤조불동적SiGe합금양품진행료성능측시,주요시대불동삼수양품적Seebeck계수치진행대비,종이득출열전성능적최가조합.불부비교료불동조분、불동정향화불동도전류형양품적Seebeck계수,환대단정SiGe합금화다정SiGe합금적열전성능진행료대비분석.발현SiGe합금적Seebeck계수구유명현적각향이성,(100)정향적Seebeck계수명현우우(111》정향.Seebeck계수여측시온도구유비상밀절적의뢰관계,수착온도적변화소유양품균재700～900K적온도범위내출현료봉치.차외환대SiGe합금적Seebeck계수여조분적관계진행료상세묘술.
To investigate the possibility of improvement in the thermoelectric properties of SiGe alloys, we examined several different silicon-germanium alloys with different contents,orientations,and electric conductive types. The thermoelectric properties of single crystal SiGe alloy were compared with those of poly-crystals. Experiment results show that the Seebeck coefficient of the sample depends on the temperature. All the samples show a maximal Seebeck coefficient in the temperature range of 700～900K. The Seebeck coefficient of the sample with (111) orientation is smaller than that of the sample with <100> orientation at the same temperature. The Seebeck coefficient of the SiGe alloy also depends on Ge content.