Thermoelectric properties of p-type (Bi2Te3)x(Sb2Te3)1-x prepared by spark plasma sintering

被引：26
|
作者：
Li, D. [1 ]
Sun, R. R. [1 ]
Qin, X. Y. [1 ]
机构：
[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
来源：
INTERMETALLICS | 2011年 / 19卷 / 12期
关键词：
Ternary alloy systems; Electrical resistance and other electrical properties; Thermoelectric properties; ANTISITE DEFECTS; CRYSTALS; ALLOYS;
D O I：
10.1016/j.intermet.2011.07.010
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
High performance (Bi2Te3)(x)(Sb2Te3)(1-x) bulk materials have been prepared by combining fusion technique with spark plasma sintering, and their thermoelectric properties have been investigated. With the increase of Bi2Te3 content, the electrical resistivity and Seebeck coefficient increase greatly and the thermal conductivity decreases significantly, which lead to a great improvement in the thermoelectric figure of merit ZT. The maximum ZT value reaches 1.33 at 398 K for the composition of 20% Bi2Te3-80% Sb2Te3 with 3 wt% excess Te. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2002 / 2005
页数：4
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