Effect of foreign metal doping on the gas sensing behaviors of SnO 2-based gas sensor

Kouichi Suematsu, Takanori Honda, Masayoshi Yuasa, Tetsuya Kida, Kengo Shimanoe, Noboru Yamazoe

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 引用 (Scopus)

抜粋

Recently, we have proposed some theoretical models, power laws and effect of particle shape and size, for semiconductor gas sensors. The models show that a depletion theory of semiconductor can be combined with the dynamics of adsorption and/or reactions of gases on the surface. In the case of SnO 2, the relative resistance (R/R0) is proportional to PO2n, where n is a constant value (n=1/2) on oxygen partial pressure. In addition, carrier concentration in SnO2 influences depth of the depletion. In this study, to experimentally reveal such effects, we tried to control the carrier concentration in SnO2 by foreign doping and examined their electrical resistance and sensor response. Correlations between doping concentration, crystalline size, and partial pressures of oxygen and H2 on the electric resistance are discussed to reveal the material design for semiconductor gas sensors.

元の言語英語
ホスト出版物のタイトルMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
出版者Trans Tech Publications
ページ1502-1505
ページ数4
ISBN(印刷物)0878493786, 9780878493784
出版物ステータス出版済み - 2008
イベントMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures - Hong Kong, P.R., 中国
継続期間: 7 28 20087 31 2008

出版物シリーズ

名前Advanced Materials Research
47-50 PART 2
ISSN(印刷物)1022-6680

その他

その他Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
中国
Hong Kong, P.R.
期間7/28/087/31/08

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • これを引用

    Suematsu, K., Honda, T., Yuasa, M., Kida, T., Shimanoe, K., & Yamazoe, N. (2008). Effect of foreign metal doping on the gas sensing behaviors of SnO 2-based gas sensor. : Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures (pp. 1502-1505). (Advanced Materials Research; 巻数 47-50 PART 2). Trans Tech Publications.