title: Solution-Processable Silicon Phthalocyanines in Electroluminescent and Photovoltaic Devices.
abstract: Phthalocyanines and their main group and metal complexes are important classes of organic semiconductor materials but are usually highly insoluble and 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 (λ(EL) = 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.
authors.affiliation: Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews , St Andrews, Fife, KY16 9ST U.K.
authors.forename: Eli
authors.initials: E
authors.lastname: Zysman-Colman
authors.affiliation: Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St. Andrews , St. Andrews, Fife, KY16 9SS U.K.
authors.forename: Sanjay S
authors.initials: SS
authors.lastname: Ghosh
authors.affiliation: Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St. Andrews , St. Andrews, Fife, KY16 9SS U.K.
authors.forename: Guohua
authors.initials: G
authors.lastname: Xie
authors.affiliation: Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St. Andrews , St. Andrews, Fife, KY16 9SS U.K.
authors.forename: Shinto
authors.initials: S
authors.lastname: Varghese
authors.affiliation: Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St. Andrews , St. Andrews, Fife, KY16 9SS U.K.
authors.forename: Mithun
authors.initials: M
authors.lastname: Chowdhury
authors.affiliation: Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews , St Andrews, Fife, KY16 9ST U.K.|Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St. Andrews , St. Andrews, Fife, KY16 9SS U.K.
authors.forename: Nidhi
authors.initials: N
authors.lastname: Sharma
authors.affiliation: Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews , St Andrews, Fife, KY16 9ST U.K.
authors.forename: David B
authors.initials: DB
authors.lastname: Cordes
authors.affiliation: Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews , St Andrews, Fife, KY16 9ST U.K.
authors.forename: Alexandra M Z
authors.initials: AM
authors.lastname: Slawin
authors.affiliation: Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St. Andrews , St. Andrews, Fife, KY16 9SS U.K.
authors.forename: Ifor D W
authors.initials: ID
authors.lastname: Samuel
keywords: near-IR emission; organic solar cells; silicon phthalocyanines; single crystals; solution-processable organic light-emitting diodes