Our work on NFAs Fibrilliazation is accepted in Advanced Materials

This work demonstrates a facile approach to refine the one-dimensional fibrillar structure in a recently reported high performance NFA L8-BO, with the assistance of a fused-ringsolvent additive 1-fluornaftalen (FN). The formation mechanism of L8-BO fibrils is revealed by molecular dynamics simulations whilst clear L8-BO fibrillar textures in neat L8-BO and D18 based mixture films are characterized via photo inducedforce microscope. The refined fibrils of L8-BO enable a superb PCE of 19.0% with FF over 80% in pseudo-bulk heterojunction organic solar cells.