Improvement of thermoelectric properties of p- and n-types oxide thick films fabricated by electrophoretic deposition

Masayuki Sakurai, Shigeru Horii, Ryoji Funahashi, Tetsuo Uchikoshi, Tohru Suzuki, Yoshio Sakka, Hiraku Ogino, Jun ichi Shimoyama, Kohji Kishio

Research output: Contribution to journalConference article

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.

Original languageEnglish
Pages (from-to)357-362
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume1044
Publication statusPublished - 2008 Oct 9
EventThermoelectric Power Generation - Boston, MA, United States
Duration: 2007 Nov 262007 Nov 29

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Sakurai, M., Horii, S., Funahashi, R., Uchikoshi, T., Suzuki, T., Sakka, Y., Ogino, H., Shimoyama, J. I., & Kishio, K. (2008). Improvement of thermoelectric properties of p- and n-types oxide thick films fabricated by electrophoretic deposition. Materials Research Society Symposium Proceedings, 1044, 357-362.