Side-chain engineering of diketopyrrolopyrrole-based copolymer using alkyl ester group for efficient polymer solar cell

Jae Yoon Kim, Young Un Kim, Hyung Jong Kim, Hyun Ah Um, Jicheol Shin, Min Ju Cho, Dong Hoon Choi

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The new diketopyrrolopyrrole-based copolymer, referred to as PDPPBDTE, bearing linear alkyl ester groups, was synthesized with the objective of improving the miscibility between the donor polymer and [6,6]-phenyl C71 butyric acid methyl ester (PC71BM). PDPPBDTA bearing ethylhexyl side-chains was also synthesized as a control polymer. The PDPPBDTE:PC71BM blend film showed a relatively small crystalline domain size compared to the PDPPBDTA:PC71BM blend film. A polymer solar cell fabricated with PDPPBDTE and PC71BM exhibited twofold higher power conversion efficiency than that employing PDPPBDTA. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)980-985
Number of pages6
JournalMacromolecular Research
Volume24
Issue number11
DOIs
Publication statusPublished - 2016 Nov 1

Keywords

  • conjugated copolymer
  • diketopyrrolopyrrole
  • film morphology
  • miscibility
  • polymer solar cell
  • side chain

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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