A new conjugated polymer utilizing diketopyrrolopyrrole (DPP) and benzo[1,2-c:4,5-c′]dithiophene-4,8-dione (BDD) units as the backbone framework was designed, synthesized, and applied in polymer solar cells.
New non-fullerene acceptors were combined with a new polythiophene donor and processed from solvent mixtures of low toxicity in organic photovoltaic cells.