Dithienylcyclopentadienone derivative-co-benzothiadiazole: An alternating copolymer for organic photovoltaics

► Synthesize and characterization of a solution processable alternating copolymer of dithienylcyclopentadienone and benzothiadiazole. ► Thermal and optical characterization of the synthesized copolymer. ► Electrochemical studies and HOMO-LUMO level determination. ► Bulk heterojunction solar cells fabricated from a blend of PCBM with the copolymer.