Resistive type sensor using ceria thick film with nano particles

Noriya Izu, Toshio Itoh, Maiko Nishibori, Woosuck Shin, Ichiro Matsubara

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

2 被引用数 (Scopus)

抄録

For gas sensors, not only sensitivity and selectivity but also fast response speed is very important. We fabricated a restive type gas sensor using ceria (cerium oxide) porous thick film with a particle size of about 100 nm in order to improve the response speed of the sensor. First, we investigated the sensing properties for the change of oxygen partial pressure. The sensor was able to detect the variation of oxygen partial pressure in the wide range from 10-18 Pa to 105 Pa at 873 K. The response time (t 90), which is defined as the time until response changes 90% of the saturated value after a sudden change of oxygen partial pressure, was about 10 ms at 1073 K. Next, we investigated the sensing properties for carbon monoxide. We developed the new sensor having two ceria thick films with and without catalyst layer to give selectivity. The sensor was able to detect carbon monoxide over 330 ppm at 773 K, and t90 was 2 s at 723 K. By using Pt/Al2O3 catalyst, the sensor hardly responded for hydrogen, so it was implied that the sensor had a good selectivity for carbon monoxide.

本文言語英語
ホスト出版物のタイトルMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
出版社Trans Tech Publications
ページ1522-1525
ページ数4
ISBN(印刷版)0878493786, 9780878493784
DOI
出版ステータス出版済み - 2008
外部発表はい
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月 28 20087月 31 2008

出版物シリーズ

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

その他

その他Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
国/地域中国
CityHong Kong, P.R.
Period7/28/087/31/08

!!!All Science Journal Classification (ASJC) codes

  • 工学一般

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