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首页> 外文会议>13th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods >Influence of near UV irradiation on ZnO nanomaterials NO_2 gas sensing properties
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Influence of near UV irradiation on ZnO nanomaterials NO_2 gas sensing properties

机译：近紫外辐射对ZnO纳米材料NO_2气敏性能的影响

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摘要

The paper presents gas sensors based on ZnO nanostructures. which were obtained from zinc acetate in a very simple and repeatable process. Obtained structures were characterised using Raman spectroscopy and scanning electron microscopy. The ZnO nanostructures were applied as receptor layers in chemoresistive gas sensors onto interdigital transducers, using drop-coating. Sensor responses to low concentrations (1 ppm) of NO_2 in the air, at different operating temperatures (room temperature 23℃ (R.T.), 100℃ and 200℃) and under different lighting conditions (dark conditions and UV irradiation - LED λ = 390 nm) are compared and discussed. Obtained results show that proper combination of elevated temperature and illumination by UV can improve sensor properties and allow it to operate at a lower temperature.
机译：本文介绍了基于ZnO纳米结构的气体传感器。它们是从乙酸锌以非常简单且可重复的过程获得的。使用拉曼光谱和扫描电子显微镜表征获得的结构。使用滴涂法将ZnO纳米结构作为化学阻滞气体传感器中的受体层应用到叉指式换能器上。在不同的工作温度（室温23℃（RT），100℃和200℃）和不同的光照条件下（黑暗条件和紫外线照射下，传感器对空气中NO_2浓度低（1 ppm）的响应-LEDλ= 390 nm）进行比较和讨论。所得结果表明，高温和紫外线照射的适当组合可以改善传感器的性能，并使其在较低的温度下工作。

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