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

Felix Hermerschmidt, Andreas S. Kalogirou, Jie Min, Georgia A. Zissimou, Sachetan M. Tuladhar, Tayebeh Ameri, Hendrik Faber, Grigorios Itskos, Stelios A. Choulis, Thomas D. Anthopoulos, Donal D.C. Bradley, Jenny Nelson, Christoph J. Brabec, Panayiotis A. Koutentis

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)2358-2365
Number of pages8
JournalJournal of Materials Chemistry C
Volume3
Issue number10
DOIs
StatePublished - Mar 14 2015

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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