Thermoelectric properties of nonstoichiometric PbTe prepared by HPHT

被引：41

作者：

Su, Taichao ^{[1
]}

Jia, Xiaopeng ^{[1
,2
]}

Ma, Hongan ^{[1
]}

Guo, Jianggang ^{[1
]}

Jiang, Yiping ^{[1
]}

Dong, Nan ^{[1
]}

Deng, Le ^{[1
]}

Zhao, Xinbing ^{[3
]}

Zhu, Tiejun ^{[3
]}

Wei, Cui ^{[3
]}

机构：

[1] Jinlin Univ, Natl Lab Superhard Mat, Changchun 130012, Peoples R China

[2] Henan Polytech Univ, Jiaozuo 454000, Peoples R China

[3] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 468卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Thermoelectric; PbTe; High pressure and high temperature; TEMPERATURE;

D O I：

10.1016/j.jallcom.2008.01.012

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：

Although there has report on PbTe-based Compounds with colossal improved thermoelectric (TE) performance by high pressure tuning, the high TE performance could not be kept to ambient pressure. In this report, nonstoichiometric PbTe sample with excess Ph (Pb0.55Te0.45) was prepared by high pressure and high temperature (HPHT) method and the ternperature-dependent thermoelectric properties were studied. The absolute value of the Seebeck coefficient for the sample increases while the electrical conductivity and the thermal conductivity decrease with rising temperature. The maximum figure of merit, ZT, of 0.37 has been achieved at 690 K for this TE material. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：410 / 413

页数：4

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