Influence of VOC structures on sensing property of SmFeO3 semiconductive gas sensor

被引：46

作者：

Moria, Masami ^{[1
]}

Itagaki, Yoshiteru ^{[1
]}

Iseda, Jun ^{[1
]}

Sadaoka, Yoshihiko ^{[2
]}

Ueda, Tsuyoshi ^{[3
]}

Mitsuhashi, Hirokazu ^{[3
]}

Nakatani, Mikiya ^{[3
]}

机构：

[1] Ehime Univ, Grad Sch Sci & Engn, Matsuyama, Ehime 8908577, Japan

[2] Ehime Univ, Cooperat Ctr Sci Ind Res, Matsuyama, Ehime 8908577, Japan

[3] New Cosmos Elect Co Ltd, Dept Engn, Osaka 5320036, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 202卷

关键词：

Perovskite-type oxide; p-type semiconductor; Competitive adsorption; VOC; ppb; OZONE DETECTION;

D O I：

10.1016/j.snb.2014.06.031

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A perovskite-type SmFeO3 oxide, which has a p-type semiconducting feature, was used as a chemo-resistive sensor material for VOC detection. SmFeO3 particles were deposited on a comb-type Pt electrode printed on an alumina substrate. In this study, 15 kinds of VOCs (methanol, ethanol, propanol, butanol, acetic acid, propionic acid, methyl acetate, ethyl acetate, acetone, methylethylketone, benzene, toluene, xylene, ethyl benzene, and chlorobenzene) with concentrations below 10 ppm were examined in the range of 350 and 500 degrees C. The resistance of the sensor increased when the referenced air was contaminated with the VOCs. The sensing behavior was characterized by the relationship, R-voc/R-air = 1 + alpha C-1/m. The observed results suggested the detecting ability of ppb-levels of several VOCs. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：873 / 877

页数：5

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