Hydrocarbon sensing with thick and thin film p-type conducting perovskite materials

被引：81

作者：

Sahner, K ^{[1
]}

Moos, R

Matam, M

Tunney, JJ

Post, M

机构：

[1] Univ Bayreuth, D-95447 Bayreuth, Germany

[2] Natl Res Council Canada, Inst Chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2005年 / 108卷 / 1-2期

关键词：

p-type semiconductor; PLD; zeolite; hydrocarbon sensor; perovskite; SrTi1-xFexO3-delta;

D O I：

10.1016/j.snb.2004.12.104

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The members of the p-type semiconducting SrTi1-xFexO3-delta family of perovskites have been studied as novel materials for hydrocarbon sensor applications. Screen-printed thick film devices are contrasted to thin films prepared by pulsed laser deposition (PLD). In order to enhance sensor specificity towards hydrocarbons, the influence of iron content, x, film thickness and operating temperature in the range from 300 to 500 degrees C has been investigated. In addition, the use of a catalytically active cover layer made of a platinum-doped zeolite has been successfully studied to reduce the influence of species with cross-interference. An initial model explaining the underlying sensing mechanism is proposed. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：102 / 112

页数：11

共 22 条

[1] Crystallographic characterization and NO2 gas sensing property of LnFeO3 prepared by thermal decomposition of Ln-Fe hexacyanocomplexes, Ln[Fe(CN)6]•nH2O, Ln = La, Nd, Sm, Gd, and Dy [J].