Characterization of Nanocrystalline Titania Thin Film Deposited by Spray Pyrolysis Technique

Abstract

Nanocrystalline titania (TiO2) thin films prepared by spray pyrolysis deposition on to the heated glass in a temperature range of TS = 350 ÷ 450oC. Analysis of optical transmission spectral of films reveals an optical band gap of about 3.2÷3.4 eV and the transmittance above 80% for TiO2 films with thickness of 0.8÷1.6 µm. X-ray diffraction (XRD) analysis demonstrates that the films are found of anatase phase in crystal structure. The AFM photographs show the nano-size of the constituents. The crystallize size and crystalline of the samples is discussed with respect to the film thickness and deposition temperature.

Structural and Optical Properties of TiO₂ Thin Films prepared by the Dip-Coating Method: Effect of Thickness and Annealing Temperature

“…Therefore, the use of nanocrystallineTiO2 films seems to be a good option to overcome this problem [12,13]. For this reason, many methods have been used to prepare TiO2 films including sputtering [14], pulsed laser deposition [15], electron beam evaporation [16], spray pyrolysis, chemical vapor deposition (CVD) [17,18] and Sol-Gel [19]. The Sol-Gel technique presents many advantages such as simplicity, low cost, operation easiness and coating suitability of all substrates forms [20].…”