Surface Defect-Passivation in SnO2 Electron Transport Layers by Caesium Iodide for High-Carrier Dynamics in Perovskite Solar Cells
Perovskite solar cell (PSC) performance is critically limited by surface defects and interfacial energy losses at the tin oxide (SnO2) electron transport layer (ETL). This study investigates the surface modification of SnO2 using cesium iodide (CsI) and cesium fluoride (CsF) to understand their influence on perovskite...