Multichromophore Donor Materials Derived from Diketopyrrolopyrrole and Phenoxazine: Design, Synthesis, and Photovoltaic Performance

Kamatham Narayanaswamy, Bommaramoni Yadagiri, Anirban Bagui, Vinay Gupta, Surya Prakash Singh

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Herein two conjugated donor molecules, TDPP-POCN and FDPP-POCN, with planar diketopyrrolopyrrole (DPP) as the core building-block acceptor unit and phenoxazine-capped acrylonitriles as arms are designed and synthesized. Solution-processed bulk-heterojunction organic solar cells based on blends of the small-molecule donors and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) exhibit promising photovoltaic device performance with a maximum power conversion efficiency up to 4.8 % for TDPP-POCN and 3.4 % for FDPP-POCN under the illumination of AM1.5G, 100 mW cm–2. To the best of our knowledge, this is the highest efficiency reported so far in DPP–phenoxazine-based systems and among acrylonitrile-bridged donor-π-acceptor-π-donor-structured small-molecule donors for solution-processed small-molecule-based organic solar cells.

Original languageBritish English
Pages (from-to)4896-4904
Number of pages9
JournalEuropean Journal of Organic Chemistry
Volume2017
Issue number33
DOIs
StatePublished - 8 Sep 2017

Keywords

  • Chromophores
  • Donor–acceptor systems
  • Nitrogen heterocycles
  • Photovoltaics
  • Solar cells

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