Effect of preparation methods on thermoelectric properties of p-type Bi2Te3-based materials

被引：8
|
作者：
Jun, Jiang [1 ]
Li, Ya-Li
Xu, Gao-Jie
Cui, Ping
Wu, Ting
Chen, Li-Dong
Wang, Gang
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315040, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
[3] Luoyang Inst Refractories Res, Luoyang 471039, Peoples R China
来源：
ACTA PHYSICA SINICA | 2007年 / 56卷 / 05期
关键词：
Bi2Te3; spark plasma sintering; zone-melting; thermoelectric property;
D O I：
10.7498/aps.56.2858
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
p-type Bi2Te3-based thermoelectric materials were fabricated by various methods, such as zone-melting, mechanical alloying, spark plasma sintering (SPS) and hot-pressing. Electrical conductivity (sigma), Seebeck coefficient (alpha), and thermal conductivity (kappa) were measured in the temperature range of 300-500 K. The influence of the preparation methods on thermoelectric properties was studied. Compared with that of the zone-melted ingot, the figure of merit ZT (ZT = alpha(2) sigma T/kappa) of those materials fabricated by the other methods mentioned were all increased to some extent. The obtained maximum ZT value was about 1.15 for that fabricated by the combination of zone-melting and spark plasma sintering technique.
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收藏
页码：2858 / 2862
页数：5
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