Chen Chen's work is accepted in Adv. Funct. Mater.

Synergeticmolecular packing between non-fullerene acceptors BTP-ThMeCl and L8-BO helps toconstruct 3D charge transport networks in ternary organic solar cells via theformation of NFA co-crystals at the molecular level is found, driving to amaximum power conversion efficiency of 19.1% with a superior fill factor of82.2%, which is the highest FF reported so far for OSCs.