COMPUTATIONAL STUDY ON THE EFFECT OF ELECTRON TRANSPORT LAYER MATERIAL VARIATIONS ON THE PERFORMANCE OF FASNI? PEROVSKITE SOLAR CELLS

• Main Author: Sofyan Parlin, Muhammad
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/86803
• Institution: Institut Teknologi Bandung

FASnI? perovskite solar cells hold great potential as renewable energy harvesting devices with low production costs and safer toxicity levels compared to lead-based solar cells. One of the key components in the structure of perovskite solar cells is the electron transport layer (ETL). This study aims to enhance the efficiency of FASnI?-based perovskite solar cells by investigating the effects of donor density, thickness, and defect density variations in electron transport layer (ETL) materials. The research is motivated by the growing need for renewable energy solutions that are environmentally friendly, efficient, and sustainable, with lead-free perovskite solar cells emerging as a promising alternative to replace hazardous lead-based materials. The solar cell architecture employed in this study is FTO/ETL/FASnI?/PTAA, with ETL materials consisting of TiO?, ZnO, and SnO?. Numerical simulations were conducted using the VASP software based on density functional theory (DFT) to determine the optimal structure of the ETL materials, and SCAPS-1D software was utilized to evaluate the impact of material and parameter variations on the solar cell performance. Simulation results reveal that SnO? demonstrates the highest power conversion efficiency (PCE) of 20.18%, outperforming TiO? and ZnO under the same donor density variation conditions. These findings highlight the critical role of ETL material selection and donor density optimization in enhancing the energy efficiency of lead-free perovskite solar cells. Further analysis indicates that high donor density improves charge carrier density and reduces electron-hole recombination, ultimately contributing to increased PCE efficiency. Keywords: DFT, ETL, lead-free solar cells, SCAPS-1D, VASP