Solvent-resistant small molecule solar cells by roll-to-roll fabrication via introduction of azide cross-linkable group

Mei-Rong Chen, Cong-Cheng Fan, Thomas Rieks Andersen, Henrik Friis Dam, Wei-Fei Fu, Yu-Ze Lin, Eva Bundgaard, Frederik C Krebs, Xiao-Wei Zhan, Hong-Zheng Chen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A novel cross-linkable azide-functionalized diketopyrrolopyrrole based compound DPP(BT-N-3)(2) was designed and synthesized via Stille coupling. Cross-linking of such molecule could help us fabricate insoluble film which could be used to fabricate heterostructures through solution processing, without dissolving the pre-patterned layers. In order to investigate the photovoltaic performances of the newly synthesized compound, large area solar cells were produced by roll coating technique. Two set of devices were fabricated by employing DPP(BT-N-3)(2) as either an electron donor or acceptor. A best power conversion efficiency of 0.067%, combined with an open circuit voltage of 0.53 V, and a fill factor of 37.6% were obtained for the device with DPP(BT-N-3)(2) as an electron acceptor. In addition, we could prove that the large area small molecule based organic solar cells could be fabricated using roll coating, which could be used in the industries for large-scale of production. (C) 2014 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalSynthetic Metals
Volume195
Pages (from-to)299-305
ISSN0379-6779
DOIs
Publication statusPublished - 2014

Keywords

  • MATERIALS
  • PHYSICS,
  • POLYMER
  • DIKETOPYRROLOPYRROLE
  • BENZODITHIOPHENE
  • DERIVATIVES
  • ITO
  • Solvent-resistant
  • Roll-to-roll fabrication
  • Large area
  • Cross-linkable
  • Small molecule solar cells
  • Diketopyrrolopyrrole

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