MgCr2O4-TiO2系P型半導体セラミックスのガス検出特性

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2015/08/01

タイトル(英語): Characteristics of P-type Semiconducting MgCr2O4-TiO2 Ceramics for Gas Sensing Devices

著者名: 矢野　満明（大阪工業大学大学院工学研究科），平原　陽介（大阪工業大学大学院工学研究科），寺田　二郎（大阪工業大学大学院工学研究科），佐々　誠彦（大阪工業大学大学院工学研究科），大松　繁（大阪工業大学大学院工学研究科）

著者名(英語): Mitsuaki Yano (Graduate School of Osaka Instititute of Technology), Yousuke Hirahara (Graduate School of Osaka Instititute of Technology), Jiro Terada (Graduate School of Osaka Instititute of Technology), Shigehiko Sasa (Graduate School of Osaka Instititute of Technology), Sigeru Omatu (Graduate School of Osaka Instititute of Technology)

キーワード: MgCr2O4-TiO2系P型半導体セラミックス，不純物添加，Langmuir等温吸着解析，1次の可逆反応　　MgCr2O4-TiO2 p-type semiconducting ceramics，impurity doping，Langmuir isotherm plot，first-order reversible reaction

要約(英語): Gas detection characteristics of p-type semiconducting MgCr2O4-TiO2 ceramics are discussed for diluted H2, NH3, C2H4, and CO gases in air. These ceramics were produced by sintering mixed oxide powders with 1.0 wt% doping of CaO, SnO2, Nb2O5, ZnO, or ZrO2. Adsorption and desorption of these gases were detected by the change of electrical resistance. It was found that the resistance change followed first-order reversible reaction as induced by the change of the potential barrier height at the grain boundaries of the ceramics. The dissociation constants of the first-order reaction agreed well with those derived from the fitting to the Langmuir isotherm equation. Dopant dependent characteristics are also discussed for respective gases.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.135 No.8 （2015） 特集：ケミカルセンサの基礎

本誌掲載ページ: 317-322 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/135/8/135_317/_article/-char/ja/