酸化亜鉛焼結体のガスセンサー特性

概要

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The sensing properties for reducing gas as hydrogen and butane of sintered ZnO which is prepared under the various conditions has been measured. Usually, it is noticed that the requirement for the gas sensor using the semiconducting oxide is porous. In this study, an optimum condition in microstructure as density and surface area is presented. From the result that the neck radius of the sample showing the good sensitivity is larger than Debye length which has been considered as the optimum neck radius in the gas sensor, the sensing mechanism of this type of the gas sensor is determined by not only the combustion reaction between reducing gas and chemisorbed oxygen on the surface but also the formation and degradation of the energy barrier along the grain boundary which is formed by the oxygen transfered with enhanced diffusion.
湘南工科大学の論文
1991-03-31