Solution-processable silicon phthalocyanines in electroluminescent and photovoltaic devices
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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.
Zysman-Colman , E , Ghosh , S S , Xie , G , Varghese , S , Chowdhury , M , Sharma , N , Cordes , D B , Slawin , A M Z & Samuel , I D W 2016 , ' Solution-processable silicon phthalocyanines in electroluminescent and photovoltaic devices ' Applied Materials & Interfaces , vol 8 , no. 14 , pp. 9247−9253 . DOI: 10.1021/acsami.5b12408
Applied Materials & Interfaces
Copyright © 2016 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
E.Z.-C. acknowledges the University of St. Andrews for financial support. The authors thank the EPSRC UK National Mass Spectrometry Facility at Swansea University for analytical services. I.D.W.S. acknowledges support from the EPSRC (grant EP/J01771X), the European Research Council (grant 321305), and a Royal Society Wolfson Research Merit Award.
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