Photovoltaic and field effect transistor performance of selenophene and thiophene diketopyrrolopyrrole co-polymers with dithienothiophene

Munazza Shahid*, Raja Ashraf, Zhenggang Huang, Auke J. Kronemeijer, Thomas McCarthy-Ward, Iain Mcculloch, James R. Durrant, Henning Sirringhaus, Martin Heeney

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

Here we report the synthesis of two new alternating co-polymers of thiophene and selenophene flanked diketopyrrolopyrrole with dithienothiophene. We find that the inclusion of the rigid fused dithienothiophene co-monomer affords semi-crystalline polymers, that exhibit promising ambipolar field effect transistor performance, with hole mobilities up to 0.23 cm 2 V -1 s -1. The selenophene containing co-polymer exhibits a reduced band gap compared to the thiophene co-polymer, as a result of stabilisation of the polymer LUMO and destabilisation of the HOMO. The thiophene co-polymer exhibits promising solar cell performance in blends with PC 71BM, with device efficiencies up to 5.1%.

Original languageEnglish (US)
Pages (from-to)12817-12823
Number of pages7
JournalJournal of Materials Chemistry
Volume22
Issue number25
DOIs
StatePublished - Jul 7 2012

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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