Post-Treatment Additives Enable Synergistic Surface Passivation and Secondary Grain Growth Regulation toward High-Performance Air-Processed Perovskite Solar Cells

Abstract

A pincer post-treatment strategy utilizing N-(2-fluoropyridin-6-yl)-2-(4-amino-4-formamido-1H-pyrazol-2-yl)acetamide (FPA) to simultaneously leverage the synergistic benefits of surface passivation and secondary grain growth regulation, thereby achieving a high efficiency of 26.01%, one of the highest efficiencies for air-processed perovskite solar cells (PSCs) reported to date.