Optimization of Photovoltaic Performance of Pb-Free Perovskite Solar Cells via Numerical Simulation

Ali Alsalme; Malak Faisal Altowairqi; Afnan Abdullah Alhamed; Rais Ahmad Khan

doi:10.3390/molecules28010224

Optimization of Photovoltaic Performance of Pb-Free Perovskite Solar Cells via Numerical Simulation

Molecules. 2022 Dec 27;28(1):224. doi: 10.3390/molecules28010224.

Authors

Ali Alsalme¹, Malak Faisal Altowairqi¹, Afnan Abdullah Alhamed¹, Rais Ahmad Khan¹

Affiliation

¹ Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.

Abstract

Recently, the simulation of perovskite solar cells (PSCs) via SCAPS-1D has been widely reported. In this study, we adopted SCAPS-1D as a simulation tool for the numerical simulation of lead-free (Pb-free) PSCs. We used methyl ammonium germanium iodide (MAGeI₃) as a light absorber, zinc oxysulphide (ZnOS) as an electron transport layer (ETL), and spiro-OMeTAD as a hole transport layer. Further, the thickness of the ZnOS, MAGeI₃, and spiro-OMeTAD layers was optimized. The optimal thicknesses of the ZnOS, MAGeI₃, and spiro-OMeTAD layers were found to be 100 nm, 550 nm, and 100 nm, respectively. The optimized MAGeI₃-based PSCs exhibited excellent power conversion efficiency (PCE) of 21.62%, fill factor (FF) of 84.05%, and Jsc of 14.51 mA/cm². A fantastic open circuit voltage of 1.77 V was also obtained using SCAPS-1D. We believe that these theoretically optimized parameters and conditions may help improve the experimental efficiency of MAGeI₃-based PSCs in the future.

Keywords: MAGeI3; SCAPS-1D; electron transport layer; perovskite solar cells; simulation.

Grants and funding

This work was funded by Deputyship for Research & Innovation, Ministry of Education in Saudi Arabia, for funding this research work through project no. IFKSURG-2-1740.