High Transparent Titanium Dioxide-Anatase Thin Films Deposited by Spin Coating Technique: Effect of Annealing Temperature
TiO2 thin films were deposited on microscopic glass (HiLab) substrate by spin coating technique. The influence of the annealing temperature on the structural, optical and electrical properties was studied. X-ray diffraction and Fourier transform-infrared absorbance were used to determine the films structural properties, UV-Vis spectroscopy and photoluminescence to investigate the optical proprieties of thin films and two-point probe method to study the electrical conductivity. Structural analysis show that the films have tetragonal structure of anatase with a preferred growth orientation along the (101) plane and the crystallite size increased from 24 nm at 400 °C to 81 nm at 600 °C where the deformation was changed inversely indicating the films crystallinity improvement. The films have a high transmittance in the visible region reach to 90% and the direct and indirect band gaps exhibit a little decrement with annealing temperature. Furthermore, the films have a low electrical conductivity.
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Document Type: Research Article
Publication date: September 1, 2018
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- Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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