Non‐Volatile Perfluorophenyl‐Based Additive for Enhanced Efficiency and Thermal Stability of Nonfullerene Organic Solar Cells via Supramolecular Fluorinated Interactions (Adv. Energy Mater. 12/2022)

Lithium-Ion Batteries In article number 2103702, U-Ser Jeng, Yen-Ju Cheng and co-workers demonstrate that a novel additive, BF7, effectively both improves the efficiency of Y6:PM6-based solar cells to 17.01 % and shows exceptional morphological stability against thermal annealing at 200 °C. GIWAXS/GISAXS analysis and theoretical calculations reveal that BF7 selectively interacts with Y6 via preferred F-π noncovalent supramolecular interactions to obtain the optimized size and orientation of Y6 nano-crystallites.