Enhanced thermoelectric performance of chloride doped bismuth sulfide prepared by mechanical alloying and spark plasma sintering

被引：43

作者：

Du, Xueli ^{[1
,2
]}

Cai, Fengshi ^{[1
,3
]}

Wang, Xuewei ^{[1
,3
]}

机构：

[1] Tianjin Univ Technol, Sch Mat Sci & Engn, Nanomat & Nanotechnol Res Ctr, Tianjin 300384, Peoples R China

[2] Tianjin Key Lab Photoelect Mat & Devices, Tianjin 300384, Peoples R China

[3] Tianjin Univ Technol, Minist Educ, Key Lab Display Mat & Photoelect Devices, Tianjin 300384, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 587卷

关键词：

Bismuth sulfides; Mechanical alloying; Spark plasma sintering; Thermoelectric; Bismuth chloride; FIGURE; BI2S3;

D O I：

10.1016/j.jallcom.2013.10.185

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：

Bi2S3 is a promising thermoelectric material with low cost element of sulfur, but its ZT value is low because of the high electrical resistivity. In the present work, BiCl3 as donor dopant was added to Bi2S3 to improve the carrier content and reduce the electrical resistivity. The mechanical alloying (MA) and spark plasma sintering (SPS) techniques were used to prepare BiCl3 doped Bi2S3 bulk samples. The optimizing carrier content tuned by dopant and the low thermal conductivity controlled by the fabrication process of MA and SPS resulted in the maximum ZT value 0.6 at 675 K for the Bi2S3 bulk doped with 1.0 mol% BiCl3. (C) 2013 Elsevier B.V. All rights reserved.

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页码：6 / 9

页数：4

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