Power conversion efficiency enhancement in diketopyrrolopyrrole based solar cells through polymer fractionation

Iain Meager*, Raja Ashraf, Christian B. Nielsen, Jenny E. Donaghey, Zhenggang Huang, Hugo Bronstein, James R. Durrant, Iain Mcculloch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Post polymerisation fractionation of diketopyrrolopyrrole based conjugated polymers through preparative gel permeation chromatography affords a varying range of molecular weight fractions with narrowed polydispersities. When used as the electron donor material in bulk heterojunction solar cells with both conventional and inverted architecture efficiency enhancements in excess of 50% are observed relative to non-fractionated material with the highest molecular weight fraction demonstrating a power conversion efficiency of 6.3%.

Original languageEnglish (US)
Pages (from-to)8593-8598
Number of pages6
JournalJournal of Materials Chemistry C
Issue number40
StatePublished - Oct 28 2014

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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