Defects Passivation With Dithienobenzodithiophene based π conjugated Polymer for

A dithienobenzodithiophene-based π-conjugated polymer consisting of fluorinated benzotriazole and benzothiadiazole is successfully applied through anti-solvent method to passivate the defects of perovskite crystals. The fluorinated polymer interacted with under coordinated Pb2þ ions in the perovskit