Non-Fullerene Acceptors: Efficient Organic Solar Cell With 16.88% Efficiency Enabled by Refined Acceptor Crystallization and Morphology With Improved Charge Transfer and Transport Properties

In article number 1904234, Feng Liu and co‐workers report a detailed structure‐performance relationship to help understand the success of Y6 non‐fullerene acceptors. Through the analysis of the single crystal structure of Y6, it is found that Y6 forms a polymer‐like conjugated backbone through its banana‐shaped structure and π‐π interactions between molecules, and forms a 2D electron transport network under the ordered arrangement of the lattice