The TiO2 pastes were prepared from commercial P25 titanium oxide powder (sample A) and titanium isopropoxide (sample B) using a hydrothermal technique. The pastes were coated on FTO glass plate and sintered at 500 οC for 30 minutes. The coated films were characterized by XRD, FTIR, SEM, TEM, UV and IV studies. XRD results confirmed that both of anatase and rutile phase were found in the film from sample A but only anatase phase were formed from sample B. The lattice parameters of sample A is a = 3.789 Å and c = 9.526 Å and those of sample B is a = 3.786 Å and c = 9.508 Å. FT-IR studies showed that there is no precursor residue present in both the sample after sintering. The UV-Vis spectrum indicates the amount of dye adsorbed on TiO2 particle. The conversion efficiency, short circuit current (Jsc), open circuit voltage (Voc) is 5.7%, 11.34 mA/cm2 and 0.7111 V, respectively, which is high for sample B compared to sample A.

Keywords: TiO2 nanoparticle, Hydrothermal technique, TEM, Conversion efficiency.