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

doi:10.1166/sl.2011.1596

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

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	703-705
Number of pages	3
Journal	Sensor Letters
Volume	9
Issue number	2
DOIs	https://doi.org/10.1166/sl.2011.1596
Publication status	Published - Apr 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1166/sl.2011.1596

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abstract = "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.",

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AU - Itoh, Toshio

AU - Taguchi, Yuko

AU - Izu, Noriya

AU - Matsubara, Ichiro

AU - Nakamura, Shunichi

AU - Suzuki, Kengo

AU - Kanda, Keisen

AU - Shin, Woosuck

AU - Nishibori, Maiko

PY - 2011/4

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N2 - 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.

AB - 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.

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Alternating current impedance analysis of CeO₂ thick films as odor sensors

Abstract

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