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

Key Points

• This research aims to improve perovskite solar cell efficiency through a novel post-treatment strategy.
• Utilized N-(2-fluoropyridin-6-yl)-2-(4-amino-4-formamido-1H-pyrazol-2-yl)acetamide for surface treatment.
• Focused on simultaneously achieving passive surface characteristics and regulating grain growth.
• Achieved a high efficiency of 26.01% for treated solar cells.
• Demonstrated significant improvements in both surface stability and grain structure.