Alkyl chain extension as a route to novel thieno[3,2-b ]thiophene flanked diketopyrrolopyrrole polymers for use in organic solar cells and field effect transistors

Iain Meager*, Raja Ashraf, Stephan Rossbauer, Hugo Bronstein, Jenny E. Donaghey, Jonathan Marshall, Bob C. Schroeder, Martin Heeney, Thomas Anthopoulos, Iain Mcculloch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

The synthesis and characterization of four new donor-acceptor type semiconducting polymers based on the electron-deficient diketopyrrolopyrrole unit for use in photovoltaic devices are reported. The extended 2-decyl-1-tetradecyl alkyl chain (C10C12) is utilized to provide a valuable route toward enhanced solubility. The resultant soluble DPP polymers were synthesized in high polymer molecular weights with a larger range of accessible comonomer units. Bulk heterojunction solar cells containing these polymers show promising device performance with efficiencies around 4%. Organic thin film transistor devices with high ambipolar hole mobilities of >0.1 cm2 V-1 s-1 are also reported.

Original languageEnglish (US)
Pages (from-to)5961-5967
Number of pages7
JournalMacromolecules
Volume46
Issue number15
DOIs
StatePublished - Aug 13 2013

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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