Carbazole-based conjugated polymers incorporating push/pull organic dyes: Synthesis, characterization, and photovoltaic applications

So Lin Hsu, Chia Min Chen, Kung-Hwa Wei*

*Corresponding author for this work

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

We have synthesized and characterized two new carbazole-based conjugated polymers, PCDCN and PCDTA, incorporating two strong light-absorbing organic dyes. These polymers exhibit relatively low band gaps (∼1.5 eV) and broad absorption ranges (from 300 to 700 nm). We fabricated polymer solar cells incorporating these polymers as donors and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as the acceptor. At a blending ratio of 1:4, we obtained power conversion efficiencies, under simulated AM 1.5 (100 mW/cm2) conditions, of 2.31% and 2.47% for the PCDCN- and PCDTA-based devices, respectively.

Original languageEnglish
Pages (from-to)5126-5134
Number of pages9
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume48
Issue number22
DOIs
StatePublished - 15 Nov 2010

Keywords

  • blends
  • conjugated polymers
  • donor/acceptor
  • photovoltaic cells
  • polycarbazole
  • polycondensation

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