Solution processable diketopyrrolopyrrole (DPP) cored small molecules with BODIPY end groups as novel donors for organic solar cells

Diego Cortizo-Lacalle, Calvyn T. Howells, Upendra K. Pandey, Joseph Cameron, Neil J. Findlay, Anto Regis Inigo, Tell Tuttle, Peter J. Skabara, Ifor D. W. Samuel

Research output: Contribution to journalArticle

19 Citations (Scopus)
153 Downloads (Pure)

Abstract

Two novel triads based on a diketopyrrolopyrrole (DPP) central core and two 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) units attached by thiophene rings have been synthesised having high molar extinction coefficients. These triads were characterised and used as donor materials in small molecule, solution processable organic solar cells. Both triads were blended with PC71BM as an acceptor in different ratios by wt % and their photovoltaic properties were studied. For both the triads a modest photovoltaic performance was observed, having an efficiency of 0.65%. Moreover, in order to understand the ground and excited state properties and vertical absorption profile of DPP and BODIPY units within the triads, theoretical DFT and TDDFT calculations were performed.

Original languageEnglish
Pages (from-to)2683–2695
Number of pages13
JournalBeilstein Journal of Organic Chemistry
Volume10
DOIs
Publication statusPublished - 18 Nov 2014

Keywords

  • diketopyrrolopyrrole
  • organic semiconductors
  • organic solar cells
  • thiophene

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