Influence of VOC structures on sensing property of SmFeO3 semiconductive gas sensor
Influence of VOC structures on sensing property of SmFeO3 semiconductive gas sensor
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DOI：
10.1016/j.snb.2014.06.031
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发表时间：
2014-10-01
影响因子：
8.4
通讯作者：
Nakatani, Mikiya
中科院分区：
文献类型：
--
作者：
Moria, Masami;Itagaki, Yoshiteru;Nakatani, Mikiya
采用具有p型半导体特性的钙钛矿型SmFeO_3氧化物作为VOC检测的化学电阻传感器材料。在氧化铝衬底上印刷的梳状铂电极上沉积了SmFeO_3颗粒。在本研究中，15种浓度小于10ppm的VOCs(甲醇、乙醇、丙醇、丁醇、醋酸、丙酸、乙酸甲酯、乙酸乙酯、丙酮、甲乙酮、苯、甲苯、二甲苯、乙苯和氯苯)在350~500℃的温度范围内被检测，当参考空气被VOCs污染时，传感器的电阻增加。用R-VOC/R-AIR=1+αC-1/m的关系表征了其传感行为，结果表明几种VOCs具有ppb水平的检测能力。(C)2014爱思唯尔B.V.保留所有权利。
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.