Solvent optimization on novel organic passivating layer for the effective passivation of perovskite films

The efficiency of perovskite solar cells (PSCs) has sparked interest in both academic and industrial circles. The existence of charge traps within the perovskite film, as well as charge recombination occurring at grain boundaries and defects in PSCs, significantly limits the power conversion efficiency (PCE). In this study, we investigate the introduction of a novel organic passivating layer on the perovskite surface, with the goal of enhancing the performance and stability of perovskite solar cells. Through experimentation, we assessed the incorporation of this organic passivating layer on the perovskite film using various solvents and discovered that toluene is the most effective solvent for both the preparation and utilization of this passivating layer in PSCs. [Display omitted] •Introduction of a novel organic passivating layer on the perovskite surface.•Utilization of four organic solvents for creating the organic passivating layer.•Toluene was identified as the most effective solvent for both preparing and applying the organic passivating layer in PSCs.