Abstarct: In this thesis, with the aim of improving the effect of photo-anode on the dye sensitized solar cell efficiency, un-doped and doped titanium oxide were synthesized using Hydrothermal technique. Structural, elemental composition, surface morphological and optical properties of synthesized samples were studied using XRD, FT-IR, Raman, EDAX, FESEM and UV-Vis analysis techniques. The paste of prepared nano-particles were synthesized and baxsed on them solar cell devices were fabricated. The fabricated cells were then characterized using solar-simulator. X-ray diffraction confirmed the formation of crystal structure in the main phase of rutile. FESEM images showed the formation of TiO2 nano-spheres, so that the size of nano-spheres showed a decrease with the increase of dopant amount. The best cell efficiency was achieved from TiO2 with 5 atomic percent to be about 4.09%, which showed 2.2 times increase with respect to the device fabricated using un-doped TiO2 . Cu and Cd in the amount of 10 atomic percent were also added to TiO2 and were characterized. Results showed that doping with 10 atomic percent of Zn gives more efficiency for the fabricated cell, rather than Cu and Cd.