Structure and optical properties of chemically synthesized titanium oxide deposited by evaporation technique
Document Type
Article
Publication Date
1-1-2010
Abstract
Titanium oxide inorganic ion exchange material was synthesized by hydrolysis with water and ammonia solution. Structural feature of the synthesized titanium oxide was analyzed using X-ray diffraction, X-ray fluorescence and infrared spectrometer technique. Tentative formula of titanium oxide was determined and written as TiO(2) center dot 0.58H(2)O. Titanium oxide films were deposited on glass substrates by means of an electron beam evaporation technique at room temperature from bulk sample. The films were annealed at 250, 350, 450, and 550 degrees C temperatures. Transmittance, reflectance, optical energy gap, refractive index and extinction coefficient were investigated. The transmittance values of 85% in the visible region and 88% in the near infrared region have been obtained for titanium oxide film annealed at 550 degrees C. Kubelka-Munk function was used to evaluate the absorption coefficient which was used to determine the optical band gap. It was found that the optical band gap increases with increasing annealing temperature whereas the refractive index and extinction coefficient decreases. (C) 2009 Elsevier Ltd. All rights reserved.
Keywords
Sol-gel technique, Thin films, Optical properties
Divisions
CHEMISTRY
Publication Title
Journal of Physics and Chemistry of Solids
Volume
71
Issue
1
Additional Information
Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA