Synthesis and characterization of new low bandgap polyfluorene copolymers for bulk heterojunction solar cells

Steve Lien Chung Hsu, Y. U.Chen Lin, Rong Fong Lee, Chinnaiah Sivakumar, Jen Sue Chen, Wei Yang Chou

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)5336-5343
Number of pages8
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume47
Issue number20
DOIs
Publication statusPublished - 2009 Oct 15

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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