4H-1,2,6-Thiadiazin-4-one-containing small molecule donors and additive effects on their performance in solution-processed organic solar cells

F. Hermerschmidt, A.S. Kalogirou, J. Min, G.A. Zissimou, S.M. Tuladhar, T. Ameri, H. Faber, G. Itskos, S.A. Choulis, T.D. Anthopoulos, D.D.C. Bradley, J. Nelson, C.J. Brabec, P.A. Koutentis

Research output: Contribution to journalArticlepeer-review

Abstract

The optical, electrochemical, morphological and transport properties of a series of thiadiazinone (acceptor) and (thienyl)carbazoles (donor) containing π-extended donor-acceptor-donors (D-A-D) are presented. Systematic variations in the number of the thienyl units, the choice of branched or straight alkyl side chains and the use of a processing additive demonstrate their use as electron donors in bulk heterojunction solar cells blended with fullerene acceptors. The best power conversion efficiency (PCE) of 2.7% is achieved by adding to the D-A-D 3:fullerene blend a polydimethylsiloxane (PDMS) additive, that improves the morphology and doubles the hole mobility within the D-A-D:fullerene blend. © The Royal Society of Chemistry.
Original languageEnglish
Pages (from-to)2358-2365
Number of pages8
JournalJournal of Materials Chemistry C Materials for optical and electronic devices
Volume3
Issue number10
DOIs
Publication statusPublished - 2015

Keywords / Materials (for Non-textual outputs)

  • Fullerenes
  • Heterojunctions
  • Hole mobility
  • Silicones
  • Alkyl side chains
  • Bulk heterojunction solar cells
  • Donor acceptor donors
  • Organic solar cell
  • Polydimethylsiloxane PDMS
  • Power conversion efficiencies
  • Solution-processed
  • Systematic variation
  • Solar cells

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