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In this work; TiO2 thin films were deposited on glass and stainless steel substrates bysol-gel spin coating method. The films deposited on glass were annealed at differenttemperatures (Ta) in the range of 200 to 500 0C and that are deposited on steel substrate wereannealed at 800 0C. The optical properties of TiO2 thin films were studied by using UV-VISspectroscopy and photoluminescence (PL) spectroscopy. The transmittance on the average wasfound to ≥ 80 % and is found to sensitive to Ta. The PL spectra exhibited the strong emissionband associated with band- to- band transition around 390 nm and the two weak bands at 480and 510 nm associated to the oxygen defects and surface defects respectively. The currentvoltage(I-V) characteristics of the Al/TiO2/steel capacitors were studied and analysed withapplication of various current mechanisms. Analysis reveals that the conduction inAl/TiO2/steel capacitors is governed by Poole-Frenkel mechanism.This work was partially supported by UGC through the Start-up Grant(F.4-5(59-FRP)/2014(BSR))). The author A R Jayakrishnan acknowledges Central University ofTamil Nadu (CUTN) for the Ph.D fellowship.info:eu-repo/semantics/publishedVersio

Optical and electrical properties of sol-gel spin coated titanium dioxide thin films