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Annealing Temperature Effects on Structural and Hydrophilic Properties of Magnesium-Doped TiO₂ Thin Films

M. Kumar, A. K. Gupta, D. Kumar

Journal of Ceramic Science and Technology, Vol. 7, No. 4 (2016), pp. 463-468

DOI: 10.4416/JCST2016-00041

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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.

Keywords

TiO2 thin films, Mg-doping, annealing, surface modification, hydrophilicity.

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