Thermoelectric Properties of P -Type BaSnO3 Ceramics Doped with Cobalt
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概要
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Perovskite-type BaSn1-xCoxO3-δ ceramics were prepared by a solid state reaction, and the electrical conductivity σ and Seebeck coefficient S were measured in the temperature range 373-1073 K to evaluate the thermoelectric power factors S2σ. Dense ceramics with relative densities of ∼98 % were obtained by firing at 1573 K for the BaSn1-xCoxO3-δ with x=0.03-0.15. Temperature dependence of σ and S showed that the BaSn1-xCoxO3-δ ceramics with x=0.03-0.15 were p-type semiconductors. A possible origin of the p-type conduction is hopping of holes between localized states of Co ions. The S2σ values were in the orders of 10-11-10-7 Wm-1K-2 and the highest value was 2.7×10-7 Wm-1K-2 at 1073 K for x=0.15.
- 社団法人粉体粉末冶金協会の論文
著者
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Hosono Hideo
Frontier Research Center Tokyo Institute Of Technology:erato-sort Jst In Frontier Research Center To
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UEDA Kazushige
Department of Pediatric Dentistry, Kyushu Dental College
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KIM Sung
Frontier Collaborative Research Center, Tokyo Institute of Technology
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YASUKAWA Masahiro
Department of Physical Electronics, Tokyo Institute of Technology
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KONO Toshio
Kochi Prefectural Industrial Technology Center
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Katase Takayoshi
Aterials And Structures Laboratory Tokyo Institute Of Technology
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Hamada Yukihiro
Department Of Electrical Engineering Akashi National College Of Technology
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神谷 利夫
Materials And Structures Laboratory Tokyo Institute Of Technology
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Yanagi Hiroshi
Interdisciplinary Graduate School of Medical and Engineering, University of Yamanashi
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