1D SiO2/TiO2 photonic crystal based ZnO-Pt DSSC with N719 dye is theoretically designed. The optical properties of theoretically designed DSSC such as transmittivity, Absorptivity and reflectivity are calculated using transfer matrix method in order to calculate numerically the key parameters like open circuit voltage (VOC), Photo current density (Jph) of the DSSC. It is found that the desired integrated system may enable to maximize the absorption in the selective spectrum region (400-900nm) and hence the maximum efficiency achieved is 4.5 % for a 1D SiO2/TiO2 photonic crystal layers with two number of periods.