Performance Comparison of Different Hole Transport Layer Configurations in a Perovskite-based Solar Cell using SCAPS-1D Simulation

Due to the solar cell industry, environmentally friendly and low-cost electricity generation processes, the use of non-renewable energy sources, especially fossil fuels, is developing day by day. Among the different solar cells under use, perovskite solar cells have recently experienced rapid growth in research due to their high performance and low production costs at the same time. Perovskite solar cells typically consist of some main layers such as absorbent, carrier layers and electrodes. The hole transport layer (HTL) is very important in the perovskite solar cell structure due to its important role in cell performance. The light absorbed by the perovskite layer leads to the formation of electrons and holes. These load carriers are then transported to the electrodes by the electron and hole transport layers. There are several types of HTL, such as small molecules in the cell structure, polymeric and inorganic HTLs. In addition, these different options can be in various configurations such as tandem, composite and single structures. In this study, three common HTL types, Spiro-OMeTAD, P3HT and Cu2O, were studied and their effects on cell performance in different composite, tandem and single forms were investigated and their results were compared. These comparisons were made in the simulation environment in SCAPS-1D software. The final results showed approximately the best 27% efficiency of the use of tandem structure in the HTL configuration with Spiro-OMeTAD and P3HT in the special perovskite solar cell created in this study.