Effects of Activation Energy to Transient Response of Semiconductor Gas Sensor
Effects of Activation Energy to Transient Response of Semiconductor Gas Sensor
复制标题
活化能对半导体气体传感器瞬态响应的影响
DOI：
10.1541/ieejeiss.132.526
复制
发表时间：
2012
影响因子：
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通讯作者：
Tatsuki Ohtani
中科院分区：
文献类型：
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作者：
A. Fujimoto;Tatsuki Ohtani
气味可分级气体传感器在气体检测报警、食品生产过程控制等方面有着广泛的应用前景，本文尝试利用二氧化锡半导体气体传感器的瞬态响应来实现气味可分级气体传感器，并指出该传感器对不同种类的气体有不同的瞬态响应。模型计算结果表明，传感器表面化学反应的活化能强烈依赖于瞬态响应。我们尝试用SnO_2团簇的分子轨道计算来估算活化能。结果表明，对于羧酸和醇类气体，瞬态响应梯度与活化能之间存在线性关系。利用这种关系，可以预测半导体气体传感器在同种气体中的瞬态响应，实现单半导体气体传感器的气味识别。
The smell classifiable gas sensor will be desired for many applications such as gas detection alarms, process controls for food production and so on. We have tried to realize the sensor using transient responses of semiconductor gas sensor consisting of tin dioxide and pointed out that the sensor gave us different transient responses for kinds of gas. Results of model calculation showed the activation energy of chemical reaction on the sensor surface strongly depended on the transient response. We tried to estimate the activation energies by molecular orbital calculation with SnO2 Cluster. The results show that there is a liner relationship between the gradient of the transient responses and activation energies for carboxylic and alcoholic gases. Transient response will be predicted from activation energy in the same kind of gas and the smell discrimination by single semiconductor gas sensor will be realized by this relationship.
DOI：
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发表时间：
2007
期刊：
影响因子：
--
作者：
A. Fujimoto;M. Tomatani;T. Kuwahara
通讯作者：
T. Kuwahara