Ligand‐Optimized Inorganic Passivation with Alkylammonium Sulfates for Perovskite Photovoltaic
Perovskite solar cells (PSCs) have reached power conversion efficiencies (PCEs) over 27%, yet further improvements in stability remain critical. Surface passivation is an effective strategy to reduce defects and enhance device durability. Inorganic passivation, in particular, offers stronger chemical bonding and de...