For the conventional photovoltaic cells, perovskite-based photovoltaics are becoming a widely used option with high-performance parameters. In this work, a lead-based perovskite PV cell is modelled and analysed with the architecture of Ni/CuI/CH3NH3PbBr3/PCBM/FTO/Glass substrate. The analysis of this architecture is done using SCAPS -1D simulator. This software is used for numerical simulation of photovoltaic cell to analyze its photophysical and electrophysical properties. In this work, the photovoltaic cell is optimized for the factors such as the absorber layer’s thickness, electron, density, and the doping concentrations of the transport layers. The performance of PV cell depends on its charge transport layer, and absorbing layer material. In this proposed design, CuI is used as holes transport layer (HTL), PCBM is used as electron transport layer (ETL) and CH3NH3PbBr3 is used as an absorbing layer. Design simulation results in the power conversion efficiency(eta) of 34.93% at 300 °K with achieving quantum efficiencies approaching 99.93% in specific wavelength ranges. Proposed structure achieves fill factor (FF) as 86.67% with Voc as 1.0616 V and Jsc as 25.66 mA/cm2. Operating wavelength range for this device simulation is taken from 300 to 900 wavelength. This work offers practical guidance for selecting the material parameters wisely for fabricating perovskite-based PV cells to achieve higher efficiency.