Thermoelectric properties of p-type Pb-doped Bi85Sb15-xPbx alloys at cryogenic temperatures

被引：13

作者：

Chen, Z. ^{[1
,2
]}

Zhou, M. ^{[1
]}

Huang, R. J. ^{[1
]}

Song, C. M. ^{[3
]}

Zhou, Y. ^{[1
]}

Li, L. F. ^{[1
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

[3] Zunyi Normal Coll, Dept Phys, Zunyi 563002, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 511卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Thermoelectric materials; Mechanical alloying; Electrical transport; Thermal conductivity; TRANSPORT-PROPERTIES; POTENTIAL MATERIALS; FIGURE;

D O I：

10.1016/j.jallcom.2011.08.076

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：

In this study we have investigated the effect of the Pb on the thermoelectric propertied of Bi-Sb alloy with different Pb-content. The Pb-doped Bi85Sb15-xPbx (x = 0, 0.5, 1, 2, 3) alloys were synthesized by mechanical alloying followed by pressureless sintering. The crystal structure was characterized by X-ray diffraction. The Seebeck coefficients, electrical conductivities, and thermal conductivities were measured in the temperature range of 77-300 K. The results show that all the Pb-doped alloys are p-type thermoelectric materials in the whole measurement temperature range. A minimum thermal conductivity of 1.7 W/mK was obtained for Bi85Sb12Pb3 sample at 150 K. A maximum ZT value of 0.11, which is higher than those previous reported, was obtained for Bi85Sb14Pb1 at 210 K. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：85 / 89

页数：5

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