In this research, a simulation study has been performed using SCSPS-1D software. In order to predict the information about this structure before making a planar perovskite solar cell. The structure of FTO / C₆₀ / CH₃NH₃PbI₃ / CuPc / Au is simulated using the parameters obtained from the experimental results specific to the constituents of perovskite solar cells and considering the effect of radiative and non-radiative recombination (Auger). The thickness effect  of different layers of solar cell has been investigated to determine their optimal thickness and provide guidelines to increase power conversion efficiency. After simulating the optimal thicknesses for the electron transfer layer, the hole transfer layer and perovskite were obtained at 10, 50 and 300 nm, respectively. Finally, for these optimal thicknesses at room temperature, the values 1.029 (V), 23.141 (mA /cm²), 62.93 (%), 15 (%) were obtained for open circuit voltage, short-cut current density, fill factor and efficiency, respectively. After examining the effect of temperature, it was found that with increasing temperature, cell function improves.