High thermoelectric properties of p-type pseudobinary (Cu4Te3)x-(Bi0.5Sb1.5Te3)1-x alloys prepared by spark plasma sintering

被引：25

作者：

Cui, Jiaolin ^{[1
]}

Xiu, Weijie

Xue, Haifeng

机构：

[1] Ningbo Univ Technol, Sch Mech Engn, Ningbo 315016, Peoples R China

[2] China Univ Min & Technol, Sch Mat Sci & Engn, Zuxhou 221008, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 12期

关键词：

D O I：

10.1063/1.2745413

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cu4Te3 substituted (Cu4Te3)(x)-(Bi0.5Sb1.5Te3)(1-x) (x=0-0.2) alloys were prepared using spark plasma sintering technique and their thermoelectric properties were evaluated. Measurements show that the alloy with x=0.025 reveals very high electrical conductivity and low lattice thermal conductivity, the Seebeck coefficient that increases linearly with temperature is dependent on Cu4Te3 concentration. The maximum ZT value of 1.26 for the alloy with x=0.025 is achieved at 474 K, whereas that of the state-of-the-art thermoelectric material Bi0.5Sb1.5Te3 is only 0.58 at 318 K, thus indicating that the currently prepared pseudobinary alloy is very encouraging. (c) 2007 American Institute of Physics.

引用

页数：4

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