| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1643582 | Materials Letters | 2015 | 4 Pages |
•A new D-A conjugated random copolymer as donor material in PSC.•The copolymer exhibited a broad absorption from 300 nm to the near infrared region and a low optical bandgap of 1.51 eV.•Preliminary studies of BHJ solar cells based on this polymer with PC60BM showed a PCE of 1.56% without any processing additives.•This work has demonstrated that the polymerization of multiple different monomers (three electron acceptor units and one donor unit) can afford novel broad absorption conjugated polymers for solar cells.
A random donor–acceptor copolymer based on difluorobenzene (DFB), diketopyrrolo[3,4-c]pyrrole (DPP) and benzothiadiazole (BT) as co-electron acceptor units in conjugation with electron-donating benzodithiophene (BDT) unit has been synthesized and characterized. The copolymer exhibited a broad absorption from 300 nm to the near infrared region and a low optical bandgap of 1.51 eV. Preliminary studies of bulk heterojunction solar cells based on this polymer with PC60BM showed a power conversion efficiency (PCE) of 1.56% without any processing additives.
