Synthesis of Zinc Oxide Nanostructured Thin Film by Sol- Gel Method and Evaluation of Gas Sensing Properties
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Abstract:
Ethanol (C2H6O) sensitivity of zinc oxide (ZnO) thin film has been studied in present work. Semiconductor thin films of zinc oxide (ZnO) were deposited onto alkali-free glass substrates by the sol–gel method and dip-coating technique. The ZnO sol was synthesized by dissolving zinc acetate dehydrate in ethanol, and then adding Tetra ethanol-amine. The as-coated films were preheated at 150 ºC for 10 min and annealed at 500 ºC for 1 h in air ambiance. Fundamental features of a sensor element e.g. sensitivity, response time and recovery process has been studied using X-ray diffraction, and Scanning Electron Microscopy. The sensitivity to ethanol was desirable and Response and recovery time were only 8 sec. and 4 sec., respectively.
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Journal title
volume 27 issue 5
pages 757- 762
publication date 2014-05-01
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