Solution-processable silicon phthalocyanines in electroluminescent and photovoltaic devices

Eli Zysman-Colman, Sanjay Sanatan Ghosh, Guohua Xie, Shinto Varghese, Mithun Chowdhury, Nidhi Sharma, David Bradford Cordes, Alexandra Martha Zoya Slawin, Ifor David William Samuel

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)
8 Downloads (Pure)

Abstract

Phthalocyanines and their main group and metal complexes are important classes of organic semiconductor materials, but are usually highly insoluble so frequently need to be processed by vacuum deposition in devices. We report two highly soluble silicon phthalocyanine (SiPc) diester compounds and demonstrate their potential as organic semiconductor materials. Near-infrared (λEL = 698-709 nm) solution-processed organic light- emitting diodes (OLEDs) were fabricated and exhibited external quantum efficiencies (EQEs) of up to 1.4%. Binary bulk heterojunction solar cells employing P3HT or PTB7 as the donor and the SiPc as the acceptor provided power conversion efficiencies (PCE) of up to 2.7% under simulated solar illumination. Our results show that soluble SiPcs are promising materials for organic electronics.
Original languageEnglish
Pages (from-to)9247−9253
JournalACS Applied Materials & Interfaces
Volume8
Issue number14
Early online date18 Mar 2016
DOIs
Publication statusPublished - 13 Apr 2016

Keywords

  • Silicon phthalocyanines
  • Single crystals
  • Near-IR emission
  • Solution-processable organic light-emitting diodes
  • Organic solar cells

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