TiO2 nanoparaticles were prepared by acid modified sol-gel method by varying different mole % of Chromium and characterized by various advanced techniques such as powder X-ray diffraction, SEM, FESEM, UV-vis, PL and photovolatage current. Analytical results demonstrated that the pure TiO2 and Cr-doped could inhibit the phase transformation, increase the surface area and decrease the crystallite size. UV-vis DRS spectrum revealed that the absorption was improved in both the ultra -violet and visible areas. Under simulated solar illumination, a short circuit current of 9.820mA and an open circuit voltage of 0.714V were attained, which were better than the absorption of N719 dyes molecules with the photoanode materials
