Enhanced thermoelectric figure of merit in p-type Bi0.48Sb1.52Te3 alloy with WSe2 addition

被引：47
|
作者：
Xiao, Yukun [1 ]
Chen, Guoxin [1 ]
Qin, Haiming [1 ]
Wu, Menglei [1 ]
Xiao, Zhepeng [1 ]
Jiang, Jun [1 ]
Xu, Jingtao [1 ]
Jiang, Haochuan [1 ]
Xu, Gaojie [1 ]
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 22期
关键词：
BISMUTH-ANTIMONY TELLURIDE; TRANSPORT-PROPERTIES; SINGLE CRYSTALS; PBTE NANOWIRES; PERFORMANCE; PBS;
D O I：
10.1039/c4ta01554a
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：
P-type Bi0.48Sb1.52Te3 alloys added with WSe2 were achieved via the zone melting method. The electrical performance was improved due to the increased carrier concentration, while the lattice thermal conductivity was simultaneously decreased, mainly due to the numerous types of nanoprecipitates produced, such as the second phase, antisite substitution and interfaces with different scales. As a result, a 23% improvement in the thermoelectric figure of merit zT was obtained with the addition of WSe2, making these composites more attractive for commercial applications.
引用
收藏
页码：8512 / 8516
页数：5
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