A star-shaped D-π-A small molecule based on a tris(2-methoxyphenyl)amine core for highly efficient solution-processed organic solar cells

J. Min, Y.N. Luponosov, A.N. Solodukhin, N. Kausch-Busies, S.A. Ponomarenko, T. Ameri, C.J. Brabec

Research output: Contribution to journalArticlepeer-review

Abstract

A new star-shaped D-π-A small molecule, 2,2′,2″- nitrilotris[(3-methoxy-4,1-phenylene)-2,2′-bithiene-5′, 5-diyleth-1-yl-1-ylidene]trimalononitrile N(Ph(OMe)-2T-DCN-Me)3, with high efficiency potential for photovoltaic applications was synthesized. Introducing a soluble tris(2-methoxyphenyl)amine (TPA-MeO) core unit can significantly improve the solubility of star-shaped small molecules without negatively impacting intramolecular conjugation and intermolecular solid state arrangements. Solution-processed organic solar cells based on a blend of N(Ph(OMe)-2T-DCN-Me)3 and PC70BM show an initially high power conversion efficiency of over 4% under simulated AM 1.5. © the Partner Organisations 2014.
Original languageEnglish
Pages (from-to)7614-7620
Number of pages7
JournalJournal of Materials Chemistry C Materials for optical and electronic devices
Volume2
Issue number36
DOIs
Publication statusPublished - 2014

Keywords

  • Molecules
  • Stars
  • Synthesis (chemical)
  • High power conversion
  • Organic solar cell
  • Photovoltaic applications
  • Small molecules
  • Solution-processed
  • Star-shaped
  • Solar cells

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