Two new low bandgap alternating polyfluorene copolymers based on dioctylfluorene and donor-acceptor-donor monomers have been synthesized via a Suzuki polymerization reaction. The resulting copolymers have low optical bandgaps at 1.99-1.98 eV The bulk heterojunction polymer solar cells were fabricated with the conjugated polymers as the electron donor and 6.6-phenyl C61-butyric acid methyl ester as the electron acceptor. The power conversion efficiencies of the solar cells based on copolymers 1 and 2 are 0.37 and 0.42%, respectively, under the illumination of AM 1.5, 100 mW/cm 2. The results indicate that the two copolymers are promising conjugated polymers for polymer solar cells.
|Number of pages||8|
|Journal||Journal of Polymer Science, Part A: Polymer Chemistry|
|Publication status||Published - 2009 Oct 15|
All Science Journal Classification (ASJC) codes
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry