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郑顺旋等人观察到常用的气敏-电阻型材料氧化锡薄膜的光学性质和气敏特性有关.这一发现突破了近半个世纪以来氧化物的气敏特性仅与电阻有关的模式.使得可以用光学量去探索至今还未清楚的氧化物气敏机理.也为新型气敏传感技术提供了有效的敏感材料.然而与气敏-电阻效应一样,纯SnO_2器件的气敏-光学效应对各种还原性气体的灵敏度几乎相同,因此制造出气体选择性良好的元件很不容易.为了提高SnO_2薄膜气敏光学效应的气体选择性,在纯SnO_2薄膜中掺杂了0.1wt%的Sb.实验观察
Zheng Shun-spin, who observed the commonly used gas-resistive material of the optical properties of tin oxide film and gas-sensitive properties of this discovery broke through nearly half a century since the oxide gas sensitivity characteristics only resistance-related mode. Optical quantity to explore the so far not yet clear oxide gas sensing mechanism.It also provides effective and sensitive material for the new gas sensing technology.However, as with the gas-resistance effect, the gas-optic effect of pure SnO 2 devices The sensitivity of the reducing gas is almost the same, so it is not easy to produce a gas-selective element.In order to improve the gas selectivity of the gas sensing optical effect of the SnO_2 thin film, pure SnO_2 thin film is doped with 0.1wt% Sb. Observed