期刊
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
卷 27, 期 1, 页码 538-541出版社
A V S AMER INST PHYSICS
DOI: 10.1116/1.3021050
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TiO2 thin films were prepared by spray pyrolysis using a solution of titanium tetrachloride and ethyl alcohol. The deposition was performed onto different substrates (silicon, quartz, glass) maintained at the same temperature, 270 degrees C. After annealing, a predominant rutile structure is obtained for films deposited onto silicon and quartz substrates, as revealed by x-ray diffraction patterns. The TiO2 films were exposed to different gases, at different temperatures, in order to evaluate their gas sensitivity. The optimum operating temperatures, showing the highest gas sensitivity, were determined, for some gases (acetone, ethanol, methane, and liquefied petroleum gas). (C) 2009 American Vacuum Society. [DOI: 10.1116/1.3021050]
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