Alternating current impedance analysis of CeO2 thick films as odor sensors

Toshio Itoh, Yuko Taguchi, Noriya Izu, Ichiro Matsubara, Shunichi Nakamura, Kengo Suzuki, Keisen Kanda, Woosuck Shin, Maiko Nishibori

研究成果: Contribution to journalArticle

3 被引用数 (Scopus)

抄録

The response of CeO2 to H2S has been investigated by an alternating current (AC) impedance analysis. The AC impedance analysis can divide whole impedance, i.e., identical with direct current resistance, to three type contributions, bulk, grain boundary, and electrode interface. In a case of CeO2, the bulk contribution is the main component of the whole impedance because of clear grain boundary, which is observed by a transmission electron microscope observation. Sensor responses are defined as the quotient of sensor resistance in no odor air and sensor resistance in odor. The sensor responses of bulk contribution are almost identical with those of whole impedance.

本文言語英語
ページ(範囲)703-705
ページ数3
ジャーナルSensor Letters
9
2
DOI
出版ステータス出版済み - 4 1 2011
外部発表はい

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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