Importance of varying electron-accepting moieties in regular conjugated terpolymers for use in polymer solar cells

Hyung Jong Kim, Gi Eun Park, Dae Hee Lee, Min Ju Cho, Dong Hoon Choi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Three A1-D-A2-D regular conjugated terpolymers containing diketopyrrolopyrrole, isoindigo, or thienoisoindigo moieties were synthesized. Each terpolymer with the combination of two different acceptors and thiophene as common donor displayed strong absorption from 500 nm to the near-IR region as well as different molecular energy levels. Among three terpolymers, bulk heterojunction polymer solar cell made of the terpolymer containing diketopyrrolopyrrole, isoindigo, and thiophene moieties and phenyl-C71-butyric acid methyl ester showed the highest power conversion efficiency of 6.95% due to its appropriate internal morphology and the high open circuit voltage conferred by the relatively low-lying highest occupied molecular orbital level of the polymer.

Original languageEnglish
Pages (from-to)256-263
Number of pages8
JournalOrganic Electronics: physics, materials, applications
Volume38
DOIs
Publication statusPublished - 2016 Nov 1

Keywords

  • Diketopyrrolopyrrole
  • Isoindigo
  • Polymer solar cells
  • Terpolymer
  • Thienoisoindigo

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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