High performance perovskite solar cell based on efficient materials for electron and hole transport layers

Abstract

Perovskite solar cell has recently gained incredible momentum and is achieving a prominent lead from its counterpart conventional solar cell. Since its reported startup in 2012, perovskite has hit the target of 22 % efficiency in the span of just a few years. Its high efficiency and low cost encourage researchers around the world to continue their research in the hope of improving its performance. This work presents an optimized model of solar cell based on perovskite material, which is developed by optimizing various possible parameters that can essentially influence the performance of the cell. These include the effect of absorber layer thickness, materials for hole transport (HTL) and electron transport (ETL) layers as they play a vital role in the efficiency and stability of the cell, and the doping density. Moreover, the influence of working temperature on the device model is also examined and it is found that the proposed solar cell can even better operate at high temperatures. Upon obtaining the optimal thickness of absorber layer, the best ETL and HTL materials along with the doping concentrations, and effect of temperature, our simulation results show a significant improvement in power conversion efficiency (PCE) of perovskite solar cell (PSC), achieving a maximum efficiency of 23.05 %.