Effect of Annealing Time of TiO 2 Thin Film Deposited by Spray Pyrolysis Deposition Method for Dye-Sensitized Solar Cell Application

Abstract

Titanium oxide (TiO 2 ) thin films were deposited onto glass substrates by spray pyrolysis method. The thin films were deposited at three different annealing time; 1, 5 and 10 hours at 400°C. The structural and electrical properties were characterized using FESEM and I-V characteristic. Polycrystalline thin film with anatase crystal structure, as evidenced from X-ray diffraction pattern, was obtained with major reflection along (101). Electrical properties have been studied by means of electrical resistivity. The dark resistivity had been measured as a function of the film thickness, d. The resistivity of samples had been found to decrease with decreasing thickness. Thus, TiO 2 is one of the most promising candidates for relatively low cost, simple manufacture for solar cell.