A new intramolecular donor-acceptor polyfluorene copolymer for bulk heterojunction solar cells

Jung Feng Lee, Steve Lien Chung Hsu, Po I. Lee, Hung Yi Chuang, Ming Lun Yang, Jen Sue Chen, Wei Yang Chou

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

We have synthesized a new low bandgap alternating polyfluorene copolymer (PFNAP) based on dioctylfluorene and a donor-acceptor monomer with an electron-withdrawing moiety as a side chain, via a Suzuki polymerization reaction. The resulting copolymer has low optical and electrochemical bandgaps. The optical bandgap and the electrochemical bandgap of PFNAP are 1.82 and 1.89 eV, respectively. The bulk heterojunction polymer solar cells were fabricated with the conjugated polymer as the electron donor and 6,6-phenyl C61-butyric acid methyl ester (PCBM) as the electron acceptor. The power conversion efficiencies (PCE) of the solar cells based on PFNAP:PCBM (1:3) and PFNAP:PCBM (1:4) are 0.61% and 0.67%, respectively, under the illumination of AM 1.5 G, 100 mW/cm2.

Original languageEnglish
Pages (from-to)1166-1172
Number of pages7
JournalSolar Energy Materials and Solar Cells
Volume94
Issue number6
DOIs
Publication statusPublished - 2010 Jun

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

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