Enhancing Charge Transport of 2D Perovskite Passivation Agent for Wide‐Bandgap Perovskite Solar Cells Beyond 21%

Passivation Agents In article number 2000082, Fei Zhang, Kai Zhu, and co-workers design a more efficient and stable perovskite solar cell by partially replacing phenylethylammonium (PEA+) with pentauorophenethylammonium (F5PEA+) as the 2D perovskite passivation agent by forming a strong noncovalent interaction between the two bulky cations, which enhances charge transport, and presents the highest performance for reported wide-bandgap perovskite solar cells.