Optimizing the Performance of Tin-Based Perovskite Solar Cells Employing 2D Tungsten Disulfide as an HTL by Numerical Simulation

Perovskite solar cells (PSC) have emerged as a prominent research area in solar cell development owing to their high-efficiency and low-cost photovoltaic technology. However, the transport layers typically employed in PSCs are organic materials, which may lead to unstable performance. In this work, a PSC with an indium tin oxide/WS2/FASnI3/Cd0.5Zn0.5S/Al configuration is proposed, and the parameters are optimized using the solar cell capacitance simulator-1D program. In the present study, the impact of the WS2 layer thickness, electron-transport layer material selection, absorber layer parameters, and interfacial defect states on the performance of the proposed solar cell is investigated. The optimized structure yields a power conversion efficiency of 23.1%, which is comparable to that of state-of-the-art PSCs. The combination of an inorganic hole-transport layer of WS2 presented in this work offers a novel approach to the development of PSCs. Tin-based perovskite solar cells have emerged as a promising solution to the pollution challenges associated with lead-based perovskite cells. The 2D WS2 materials shown here effectively modify the surface of perovskite materials to improve solar cell performance. In this research article, simulations are presented that discuss the combination and optimization of these two materials to achieve more efficient solar cells.image (c) 2023 WILEY-VCH GmbH