File
Authors
Mori, Kouta Department of Engineering Science, The University of Electro-Communications / JST, ALCA
Usui, Hidetomo JST, ALCA / Department of Physics, Graduate School of Science, Osaka University
Sakakibara, Hirofumi Department of Engineering Science, The University of Electro-Communications Researchers DB KAKEN
Kuroki, Kazuhiko JST, ALCA / Department of Physics, Graduate School of Science, Osaka University
Abstract
Motivated by a recent observation of good thermoelectric properties in PtSb2, we theoretically study related pyrites in an attempt to seek for a material that overcomes the suppression of the Seebeck coefficient at high temperatures. We find that PtAs2 and PtP2 are good candidates, where their larger band gaps than that of PtSb2 combined with the overall flatness of their band top gives rise to a monotonically increasing Seebeck coefficient up to high temperatures. This expectation has been confirmed quite recently for hole-doped PtAs2, where a very large power factor of ∼65 µW cm−1 K−2 at T = 400 K is observed.
Publisher
The Physical Society of Japan
Content Type
Journal Article
Link
ISSN・ISBN
00319015
NCID
AA11509785
Journal Title
Journal of the Physical Society of Japan
Volume
83
Issue
2
Start Page
023706
Published Date
2014-01-29
Publisher-DOI
Text Version
Author
Rights
© 2014 The Physical Society of Japan (J. Phys. Soc. Jpn. 83, 023706.)
Citation
K. Mori, H. Usui, H. Sakakibara and K. Kuroki. Theoretical expectation of large Seebeck effect in PtAs2 and PtP2. Journal of the Physical Society of Japan. 2014, 83(2), 023706
Department
Faculty of Engineering/Graduate School of Engineering
Language
English