Thermoelectric properties of undoped CoSb3

被引：25
|
作者：
Kim, IH
Choi, GS
Han, MG
Kim, JS
Lee, JI
Ur, SC
Hong, TW
Lee, YG
Ryu, SL
机构：
[1] Chungju Natl Univ, Nano Technol Lab, Dept Mat Sci & Engn, Chungju 380702, Chungbuk, South Korea
[2] Korea Inst Geosci & Mineral Resources, Minerals & Mat Proc Div, Taejon 305350, South Korea
来源：
DESIGNING, PROCESSING AND PROPERTIES OF ADVANCED ENGINEERING MATERIALS, PTS 1 AND 2 | 2004年 / 449-4卷
关键词：
CoSb3; skutterudite; thermoelectric;
D O I：
10.4028/www.scientific.net/MSF.449-452.917
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
CoSb3 compounds were prepared by the arc melting and their thermoelectric properties were investigated at 300K-600K. Annealing effects were examined and they were correlated to phase transformation and homogenization. Undoped CoSb3 showed p-type conduction and intrinsic semiconducting behaviour at all temperatures examined. Thermoelectric properties were changed with constituent phases because gamma-CoSb2, beta-CoSb and Sb are metallic or semimetallic phases while delta-CoSb3 is semiconducting phase. Thermoelectric properties were remarkably improved by annealing in vacuum and they were closely related to phase transitions. Single phase delta-CoSb3 was successfully obtained by annealing at 400degreesC for 24hrs.
引用
收藏
页码：917 / 920
页数：4
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