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高温高压制备的PbSe的电学性能

DOI: 10.11858/gywlxb.2013.04.004, PP. 495-499

Keywords: 热电材料,高压,PbSe,电阻率,功率因子

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Abstract:

PbSe与热电材料PbTe同属于Ⅳ-Ⅵ族半导体材料,且晶体结构相同,但是PbSe作为热电材料的研究较少。鉴于高温高压合成能够有效提高PbTe的热电性能,利用高压熔融淬火方法制备了PbSe,并通过X射线衍射和扫描电子显微镜表征了PbSe的物相组成及微观结构,研究了合成压力及温度对PbSe电学性能的影响。结果表明,高温高压制备的PbSe具有较低的电阻率和较高的功率因子,是较好的温差发电用热电材料。

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