Enhanced Photovoltaic Performance of Indacenodithiophene-Quinoxaline Copolymers by Side-Chain Modulation

  • Dongfeng Dang
  • , Weichao Chen
  • , Scott Himmelberger
  • , Qiang Tao
  • , Angelica Lundin
  • , Renqiang Yang
  • , Weiguo Zhu
  • , Alberto Salleo
  • , Christian Müller
  • , Ergang Wang

Research output: Contribution to journalArticlepeer-review

133 Scopus citations

Abstract

Two pairs of indacenodithiophene (IDT) and quinoxaline-based copolymers with meta- or para-hexyl-phenyl side chains on the IDT unit are synthesized. The meta-substituted polymers offer better solubility, higher molecular weight for both fluorinated and non-fluorinated copolymers, and a superior photovoltaic performance with a power conversion efficiency of 7.8%. The side-chain design strategy presented is an efficient way to produce high performance conjugated polymers for organic electronics.

Original languageEnglish
Article number1400680
JournalAdvanced Energy Materials
Volume4
Issue number15
DOIs
StatePublished - 1 Oct 2014
Externally publishedYes

Keywords

  • conjugated polymers
  • energy conversion
  • polymer solar cells
  • semiconducting materials
  • side-chain modulation

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