高温高压下Bi2Te3掺杂PbTe的热电性能

吉林大学学报(工学版)

高温高压下Bi₂Te₃掺杂PbTe的热电性能

宿太超¹，马红安¹，朱品文¹，周林¹，郭建刚¹，贾晓鹏^1,2

1.吉林大学超硬材料国家重点实验室，长春 130012；2.河南理工大学材料科学与工程学院，河南焦作 454000

收稿日期:2006-12-13 修回日期:2007-03-12 出版日期:2008-01-01 发布日期:2008-01-01
通讯作者: 贾晓鹏

Study of the thermoelectric properties of PbTe doped with Bi₂Te₃ at high-pressure and high-temperature

Su Tai-chao1，Ma Hong-an¹，Zhu Pin-wen¹，Zhou Lin¹，Guo Jian-gang¹，Jia Xiao-peng^1,2

1.National Lab of Superhard Materials, Jinlin University, Changchun 130012,China；2.Insititute of Materials Science and Technology, Henan University of Technology, Jiaozuo 454000, China

Received:2006-12-13 Revised:2007-03-12 Online:2008-01-01 Published:2008-01-01
Contact: Jia Xiao-peng

摘要/Abstract

摘要： 利用高温高压技术，在3 GPa、1200 K的条件下，对PbTe进行了Bi2Te3的掺杂，并在室温下对其进行了电阻率、赛贝克系数、热导率的测试。结果表明，高温高压下，掺杂微量的Bi₂Te₃对PbTe的热电性质有很大的影响，PbTe样品的品质因子随着掺杂Bi₂Te₃的剂量的增加先大幅度升高而后逐渐轻微下降，掺杂Bi₂Te₃的摩尔分数为1×10^-4 时其最大的品质因子高达9.3×10^-4 K^-1。这一结果比常压下利用Bi₂Te₃对PbTe掺杂的样品高近20%。

关键词: 高能物理学, 掺杂, 热电材料, 高温高压, PbTe, Bi2Te3

Abstract:

N-type lead telluride compounds (PbTe) doped with Bi₂Te₃were prepared under 3 GPa and 1200 K by HPHT technology. The electrical resistivity, Seebeck coefficient and thermal conductivity of PbTe doped with Bi₂Te₃ were studied at room temperature. Results show that the figure-of-merit,Z, increases dramatically first, then decreases slowly with the increase in Bi₂Te_3, and the maximum value of Z is 9.3×10-4 K^-1 when mole fraction of PbTe is 1×10^-4 . This value is about 20% higher than that prepared at ambient pressure.

Key words: high energy physics, doping, thermoelectric materials, high-pressure and high-temperature, PbTe, Bi2Te3

中图分类号:

O521

宿太超，马红安，朱品文，周林，郭建刚，贾晓鹏 . 高温高压下Bi₂Te₃掺杂PbTe的热电性能[J]. 吉林大学学报(工学版), 2008, 38(01): 66-69.

Su Tai-chao1，Ma Hong-an，Zhu Pin-wen，Zhou Lin，Guo Jian-gang，Jia Xiao-peng . Study of the thermoelectric properties of PbTe doped with Bi₂Te₃ at high-pressure and high-temperature[J]. 吉林大学学报(工学版), 2008, 38(01): 66-69.

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高温高压下Bi₂Te₃掺杂PbTe的热电性能

Study of the thermoelectric properties of PbTe doped with Bi₂Te₃ at high-pressure and high-temperature

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