Soluble Dicyanodistyrylbenzene-Based Non-Fullerene Electron Acceptors with Optimized Aggregation Behavior for High-Efficiency Organic Solar Cells

A new class of small molecules based on dicyanodistyrylbenzene combined with naphthalimide is developed for use as non‐fullerene electron acceptors in bulk heterojunction organic solar cells. The optical, electrochemical, and film formation characteristics of the new materials are found to be suitable for preparing solution‐processed devices. Solar cells prepared with poly(3‐hexylthiophene) (P3HT) as a donor material exhibit a maximum power conversion efficiency of 2.71%.