Optimization of Structure of Solar Cells Based on Lead Perovskites (CH3NH3PbX3, X: I, Br) Via Numerical Simulation

In this paper, numerical simulation of perovskitesolar cells (PSCs) for two structures (direct and inverted) and two perovskites (MAPbX3, MA: CH3NH3, X: I, Br) had beendoneby SCAPS software. Thickness of active layers (the perovskites) have beenoptimized by using PCE curvesand then,electrical properties of the solar cells have beenextracted. Results of simulations showthat the best structure is inverted structure with active layer MAPbI3which characteristics of the structure are 15.4%, 24.68 mA/cm2, 8.48 V, and 73.74% for PCE, JSC, VOC, and FF, respectively. In addition, study of donors or acceptors density demonstratethat the parameter is so effective on performance of solar cells and PCE achieved to 18% by increase in the parameter.