Enhanced Efficiency of Perovskite Solar Cells with Reduced Graphene Oxide as an HTL: A Simulation Analysis Using SCAPS-1D

In recent years, perovskite solar cells’ power conversion efficiency has increased significantly. Perovskite solar cells, on the other hand, experience continual light and thermal stress as a result of the p-dopants and other additives in the HTLs. We created a model that uses reduced graphene oxide (rGO) as an HTL to enhance stability, and we used SCAPS-1D to analyse how efficiency changed when parameters were changed. The effect of perovskite layer thickness, perovskite layer doping, TCO layer thickness and reduced graphene oxide (rGO) on the model’s performance was examined. Taking into account the negative consequences it imposes, the perovskite material utilised in the model is tin-based (CH3NH3SnIBr2) as opposed to the deadly lead-based perovskites. Our simulation shows that we can produce high-performance perovskite solar cells with an efficiency of above 15% at a substantially reduced cost by optimising the rGO doping.