Alkyl Fluorination Aromatic Acetamidine Cation Enhances the Lattice Stability and Performance of 2D Ruddlesden‐Popper Perovskite Solar Cells

Abstract Fluorinated organic cations are used to enhance the power conversion efficiency (PCE) of quasi‐2D Ruddlesden‐Popper perovskite solar cells (2DRP PSCs), however, most of them focus fluorine substitution on the benzene ring. Herein, a novel α ‐fluorophenylethanimidamide ( α ‐FPEIA) spacer cat... View More