Research Highlights: Hidden structure ordering along backbone of fused-ring electron acceptors enhanced by ternary bulk heterojunction
Fused-ring electron acceptors (FREAs), as a family of non-fullerene acceptors, have achieved tremendous success in pushing the power conversion efficiency of organic solar cells. Here, we reported the detailed molecular packing motifs of two extensively studied FREAs – ITIC and ITIC-Th, which is revealed for the first time the long-range structure ordering along the backbone direction originated from favored end group π-π stacking.… Read More