Optoelectronic properties and charge transfer in donor-acceptor all-conjugated diblock copolymers

Ioan Botiz, Richard D. Schaller, Rafael Verduzco, Seth B. Darling

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

All-conjugated block copolymers, which can self-assemble into well-ordered morphologies, provide exciting opportunities to rationally design and control the nanoscale organization of electron-donor and electron-acceptor moieties in optoelectronic active layers. Here we report on the steady-state and time-resolved optical characterization of block copolymer films and solutions containing poly(3-hexylthiophene) as the donor block and poly(9,9- dioctylfluorene) with and without copolymerization with benzothiadiazole as the acceptor block. Transient absorption measurements suggest rapid charge transfer occurs in both systems, with higher efficiency observed in the latter composition. These results indicate that this class of materials has promise in preparing highly ordered bulk heterojunction all-polymer organic photovoltaic devices.

Original languageEnglish
Pages (from-to)9260-9266
Number of pages7
JournalJournal of Physical Chemistry C
Volume115
Issue number18
DOIs
Publication statusPublished - May 12 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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