A Perovskite sensitized solar cell was simulated using SILVACO ATLAS software and the obtained results were compared with the experimental data. The newly modeled Perovskite sensitized solar cell with ITO/TiO2/Perovskite/PEDOT/Au structure by focusing on photo-generation, carrier dissociation and photo-current creation processes provided promising results with the conversion efficiency of 11.73% and the Fill Factor (FF) of 70.10% under the AM1.5 illumination.