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ID 48957
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Author
Nishikubo, Yoshihiro
Nakano, Seiya
Abstract
The effects of Ir doping on the thermoelectric properties of Pt1-xIrxSb2 (x = 0, 0.01, 0.03, and 0.1) with pyrite structure were studied. Measurements of electrical resistivity rho, Seebeck coefficient S, and thermal conductivity kappa were conducted. The results showed an abrupt change from semiconducting behavior without Ir (x = 0) to metallic behavior at x = 0.01. The sample with x = 0.01 exhibited large S and low rho, resulting in a maximum power factor (S-2/rho) of 43 mu W/cmK(2) at 400 K. The peculiar "pudding mold"-type electronic band dispersion could explain the enhanced thermoelectric properties in the metallic state.
Published Date
2012-06-19
Publication Title
Applied Physics Letters
Volume
volume100
Issue
issue25
Publisher
American Institute of Physics.
Start Page
252104-1
End Page
252104-3
ISSN
0003-6951
Content Type
Journal Article
Official Url
http://dx.doi.org/10.1063/1.4729789
language
英語
Copyright Holders
© 2012 American Institute of Physics.
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publisher
Refereed
True
DOI
Web of Sience KeyUT