文章基本信息

标题：Effect of heat treatment on TiO2 thin films properties
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作者：El Fanaoui A. ; Taleb A. ; El Hamri E. 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2016
卷号：7
期号：3
页码：907-914
出版社：University of Mohammed Premier Oujda
摘要：The aim of this study was to investigate the influence of the annealing temperature on the structural and optical properties of TiO 2 thin films, deposited by chemical bath deposition method (CBD) onto glass substrates. The X-ray diffraction (XRD) experiments show that the well-known anatase phase was observed for some annealing temperature. The best conditions of crystallization were found upon annealing at temperatures higher than 400 °C in the air. The surface morphology of the deposited films characterized by the Field-Emission Gun Scanning Electron Microscope (FEGSEM) consists of granular texture with a clear identified grain at the surface. The size of the grains is more than 100 nm and increases with annealing temperature. The UV-Vis-NIR spectroscopy shows that our films exhibit a high value of optical transmission which is around 80%. The indirect band gap of the deposited films was found to range between 3.17 and 3.44 eV depending on the annealing temperature. The Urbach energy increases with the annealing temperature.
关键词：Anatase; band gap; chemical bath deposition; rutile; titanium dioxide.