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Improvement of Thermoelectric Properties of p- and n-types Oxide Thick Films Fabricated by Electrophoretic Deposition

Published online by Cambridge University Press:  01 February 2011

Masayuki Sakurai ,
Shigeru Horii ,
Ryoji Funahashi ,
Tetsuo Uchikoshi ,
Tohru Suzuki ,
Yoshio Sakka ,
Hiraku Ogino ,
Jun-ichi Shimoyama  and
Kohji Kishio
Masayuki Sakurai
Affiliation:
tt66706@mail.ecc.u-tokyo.ac.jp, University of Tokyo, Department of Applied Chemistry, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
Shigeru Horii
Affiliation:
tholy@mail.ecc.u-tokyo.ac.jp, University of Tokyo, Department of Applied Chemistry, Tokyo, 113-8656, Japan
Ryoji Funahashi
Affiliation:
funahashi-r@aist.go.jp, National Institute of Advanced Industrial Science and Technology, Osaka, 363-8577, Japan
Tetsuo Uchikoshi
Affiliation:
UCHIKOSHI.Tetsuo@nims.go.jp, National Institute for Materials Science, Ibaraki, 305-0047, Japan
Tohru Suzuki
Affiliation:
SUZUKI.Tohru@nims.go.jp, National Institute for Materials Science, Ibaraki, 305-0047, Japan
Yoshio Sakka
Affiliation:
SAKKA.Yoshio@nims.go.jp, National Institute for Materials Science, Ibaraki, 305-0047, Japan
Hiraku Ogino
Affiliation:
tuogino@mail.ecc.u-tokyo.ac.jp, University of Tokyo, Department of Applied Chemistry, Tokyo, 113-8656, Japan
Jun-ichi Shimoyama
Affiliation:
shimo@sogo.t.u-tokyo.ac.jp, University of Tokyo, Department of Applied Chemistry, Tokyo, 113-8656, Japan
Kohji Kishio
Affiliation:
tkishio@mail.ecc.u-tokyo.ac.jp, University of Tokyo, Department of Applied Chemistry, Tokyo, 113-8656, Japan
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Abstract

We report thermoelectric (TE) properties of mono-layer thick films of p-type [Ca2CoO3-δ]0.62CoO2 (Ca349) and n-type compounds of Ca0.9La0.1MnO3 (Mn113) and LaNi0.98Mo0.02O3 (Ni113) for the improvement of TE performance in multi-layered TE modules. In the case of magnetically aligned Ca349 film, the improvement of TE properties due to the reduction of resistivity (ρ) was achieved by optimization of hot-pressing temperature and ρ was sensitive to relative density of the Ca349 layer. For the decrease in ρ of the n-type layers, two different approaches, the choice of Ni113 as a n-type compound and usage of fine powders of Mn113, were attempted. Both approaches were effective for reducing ρ even in the sintering at ∼900°C.

Keywords

thermoelectricityelectrodepositionoxide
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1044: Symposium U – Thermoelectric Power Generation , 2007 , 1044-U09-01
Copyright
Copyright © Materials Research Society 2008

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