NO2 sensing properties of WO3 varistor-type gas sensor
NO2 sensing properties of WO3 varistor-type gas sensor
复制标题
WO3压敏电阻式气体传感器的NO2传感特性
DOI：
10.1016/j.snb.2010.08.035
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发表时间：
2010-10-28
影响因子：
8.4
通讯作者：
Dong, Liang
中科院分区：
文献类型：
--
作者：
Hua, Zhongqiu;Wang, Yu;Dong, Liang
研究了纯WO 3陶瓷气敏非线性I-V特性对NO2气敏特性的影响。实验结果表明，WO 3陶瓷具有非线性I-V特性，在NO2气敏过程中击穿电压向高电场方向移动，从而表现出NO2气敏特性，其工作温度和工作电压均低于文献报道的压敏电阻。本文从晶界势垒的变化解释了气敏非线性I-V特性的机理，证明了WO 3可以作为一种新型压敏型气敏材料（C）2010 Elsevier B V All rights reserved
NO2 sensing properties of pure WO3 ceramics based on the gas sensitive nonlinear current-voltage (I-V) characteristics have been investigated Experimental results show that WO3 ceramics exhibit nonlinear I-V characteristics and breakdown voltage shift to a high electric field upon exposure to NO2 thus exhibiting NO2 sensitivity and the operating temperatures and voltages are relatively lower than the previous reported varistor-type gas sensors The mechanism of gas sensitive nonlinear I-V characteristics has been explained by the alternations of the potential barriers at the grain boundaries The present results demonstrate that WO3 can be used as a new varistor-type gas sensor material (C) 2010 Elsevier B V All rights reserved