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Annealing Temperature Effects on Structural and Hydrophilic Properties of Magnesium-Doped TiO2 Thin Films
M. Kumar1, A. K. Gupta1, D. Kumar2
1 Department of Electronics and Communication, National Institute of Technology (NIT), Kurukshetra, India
2 Department of Electronic Science, Kurukshetra University, Kurukshetra, India.
received May 23, 2016, received in revised form July 4, 2016, accepted July 18, 2016
Vol. 7, No. 4, Pages 463-468 DOI: 10.4416/JCST2016-00041
Abstract
Magnesium-doped TiO2 thin films were deposited with the sol-gel spin coating technique. The effects of annealing on the structural and hydrophilic properties were studied. The films deposited on a Corning glass substrate were characterized by means of X-ray diffraction (XRD), UV-visible spectroscopy and Fourier transform infrared spectroscopy. The water contact angle was measured in order to investigate the hydrophilic property of the doped TiO2 films. It was observed that the crystallite structure of the doped TiO2 films improved significantly with increasing temperature. The formation of anatase and rutile phase was observed at 400 °C. The photo-induced hydrophilicity was found to improve for Mg-doped TiO2 film annealed at 500 °C.
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Keywords
TiO2 thin films, Mg-doping, annealing, surface modification, hydrophilicity.
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