高温高压下掺杂N型PbTe的热电性能

宿太超; 朱品文; 马红安; 任国仲; 郭建刚; 今井义雄; 贾晓鹏

doi:10.11858/gywlxb.2007.01.009

高温高压下掺杂N型PbTe的热电性能

doi: 10.11858/gywlxb.2007.01.009

1.
吉林大学超硬材料国家重点实验室，吉林长春 130012；
2.
日本国立材料研究所环境材料研究中心，日本筑波 3050047；
3.
中国科学院长春精密机械与物理研究所，吉林长春 130033；
4.
河南理工大学，河南焦作 454000

详细信息

通讯作者:
贾晓鹏

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出版历程
- 收稿日期: 2006-03-02
- 修回日期: 2006-06-16
- 发布日期: 2007-03-05

Thermoelectric Properties of N-PbTe Doped with Sb2Te3 Prepared by High-Pressure and High-Temperature

1.
National Laboratory of Superhard Materials, Jilin University, ChangChun 130012, China;
2.
Eco-Material Research Center, National Institute for Materials Science, Tsukuba 3050047, Japan;
3.
Changchun Institute of Optics Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
4.
Henan University of Technology, Jiaozuo 454000, China

More Information

Corresponding author: JIA Xiao-Peng

摘要

摘要: 以Sb2Te3作为掺杂剂，利用高温高压技术，成功合成出N型PbTe。在常温下对其热电性能的测试结果表明：掺杂微量的Sb2Te3后，PbTe的赛贝克系数绝对值和电阻率大幅度下降，热导率随掺杂浓度的增加缓慢升高。掺杂后PbTe的品质因子先大幅度增加，后逐渐降低，最高达到8.710-4 K-1，它比常压合成的PbTe掺杂PbI2高一倍以上。结果表明，将高温高压方法与掺杂相结合，能有效地改善PbTe的热电性能。
- PbTe /
- Sb2Te3 /
- 高温高压 /
- 热电材料
Abstract: N-type PbTe compounds doped with Sb2Te3 have been prepared at high-pressure and high-temperature (HPHT). The thermoelectric properties of all the samples have been measured at room temperature. The Seebeck coefficients in absolute value and the electrical resistivities decrease with an increase of Sb2Te3 content dramatically first and then slowly. The thermal conductivity slight increases with an increase of the content of doping. The figure of merit, Z, increases first and then decreases and the maximum value reaches 8.710-4 K-1 which is much higher than that PbTe doped with PbI2 prepared at normal pressure. This result indicates that enhanced thermoelectric properties of PbTe can be obtained by the HPHT method with suitable dopant.
- PbTe /
- Sb2Te3 /
- high-pressure and high-temperature /
- thermoelectric materials

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参考文献(10)

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