Thin Films Technology Laboratory, Department of Physics, COMSATS Institute of Information Technology, Islamabad 44000, Pakistan.
Sensors (Basel). 2012 Oct 16;12(10):13842-51. doi: 10.3390/s121013842.
In this paper, synthesis and results of the low temperature sensing of carbon monoxide (CO) gas and room temperature UV sensors using one dimensional (1-D) ZnO nanostructures are presented. Comb-like structures, belts and rods, and needle-shaped nanobelts were synthesized by varying synthesis temperature using a vapor transport method. Needle-like ZnO nanobelts are unique as, according to our knowledge, there is no evidence of such morphology in previous literature. The structural, morphological and optical characterization was carried out using X-ray diffraction, scanning electron microscopy and diffused reflectance spectroscopy techniques. It was observed that the sensing response of comb-like structures for UV light was greater as compared to the other grown structures. Comb-like structure based gas sensors successfully detect CO at 75 °C while other structures did not show any response.
本文介绍了使用一维（1-D）氧化锌纳米结构对一氧化碳（CO）气体的低温感应和室温紫外线传感器的合成和结果。通过使用气相传输法改变合成温度，合成了梳状结构、带和棒以及针状纳米带。针状 ZnO 纳米带是独特的，因为据我们所知，以前的文献中没有这种形态的证据。使用 X 射线衍射、扫描电子显微镜和漫反射光谱技术进行了结构、形态和光学特性的表征。观察到，与其他生长结构相比，梳状结构对紫外光的感应响应更大。基于梳状结构的气体传感器成功地在 75°C 下检测到 CO，而其他结构则没有任何响应。
