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dc.contributor.authorWijeyasinghe, Nilushi
dc.contributor.authorRegoutz, Anna
dc.contributor.authorEisner, Flurin
dc.contributor.authorDu, Tian
dc.contributor.authorTsetseris, Leonidas
dc.contributor.authorLin, Yen-Hung
dc.contributor.authorFaber, Hendrik
dc.contributor.authorPattanasattayavong, Pichaya
dc.contributor.authorLi, Jinhua
dc.contributor.authorYan, Feng
dc.contributor.authorMcLachlan, Martyn A.
dc.contributor.authorPayne, David J.
dc.contributor.authorHeeney, Martin
dc.contributor.authorAnthopoulos, Thomas D.
dc.date.accessioned2017-10-03T12:49:35Z
dc.date.available2017-10-03T12:49:35Z
dc.date.issued2017-07-28
dc.identifier.citationWijeyasinghe N, Regoutz A, Eisner F, Du T, Tsetseris L, et al. (2017) Copper(I) Thiocyanate (CuSCN) Hole-Transport Layers Processed from Aqueous Precursor Solutions and Their Application in Thin-Film Transistors and Highly Efficient Organic and Organometal Halide Perovskite Solar Cells. Advanced Functional Materials 27: 1701818. Available: http://dx.doi.org/10.1002/adfm.201701818.
dc.identifier.issn1616-301X
dc.identifier.doi10.1002/adfm.201701818
dc.identifier.urihttp://hdl.handle.net/10754/625707
dc.description.abstractThis study reports the development of copper(I) thiocyanate (CuSCN) hole-transport layers (HTLs) processed from aqueous ammonia as a novel alternative to conventional n-alkyl sulfide solvents. Wide bandgap (3.4–3.9 eV) and ultrathin (3–5 nm) layers of CuSCN are formed when the aqueous CuSCN–ammine complex solution is spin-cast in air and annealed at 100 °C. X-ray photoelectron spectroscopy confirms the high compositional purity of the formed CuSCN layers, while the high-resolution valence band spectra agree with first-principles calculations. Study of the hole-transport properties using field-effect transistor measurements reveals that the aqueous-processed CuSCN layers exhibit a fivefold higher hole mobility than films processed from diethyl sulfide solutions with the maximum values approaching 0.1 cm2 V−1 s−1. A further interesting characteristic is the low surface roughness of the resulting CuSCN layers, which in the case of solar cells helps to planarize the indium tin oxide anode. Organic bulk heterojunction and planar organometal halide perovskite solar cells based on aqueous-processed CuSCN HTLs yield power conversion efficiency of 10.7% and 17.5%, respectively. Importantly, aqueous-processed CuSCN-based cells consistently outperform devices based on poly(3,4-ethylenedioxythiophene) polystyrene sulfonate HTLs. This is the first report on CuSCN films and devices processed via an aqueous-based synthetic route that is compatible with high-throughput manufacturing and paves the way for further developments.
dc.description.sponsorshipN.W., Y-H.L, H.F., and T.D.A. are grateful to the to the European Research Council (ERC) AMPRO grant number 280221, and the Engineering and Physical Sciences Research Council (EPSRC) grant number EP/L504786/1, for financial support. D.J.P. acknowledges support from the Royal Society (UF100105) and (UF150693). D.J.P. and A.R. acknowledge support from the EPSRC (EP/M013839/1 and EP/M028291/1). M.A.M. and T.D. are grateful for support through the EPSRC Centre for Doctoral Training in Plastic Electronics EP/L016702/1 and the Stephen and Anna Hui Scholarship (Imperial College London).
dc.publisherWiley
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/adfm.201701818/abstract
dc.rightsThis is the peer reviewed version of the following article: Copper(I) Thiocyanate (CuSCN) Hole-Transport Layers Processed from Aqueous Precursor Solutions and Their Application in Thin-Film Transistors and Highly Efficient Organic and Organometal Halide Perovskite Solar Cells, which has been published in final form at http://doi.org/10.1002/adfm.201701818. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
dc.subjectCopper(I) thiocyanate
dc.subjectHole-transport layers
dc.subjectOrganic solar cells
dc.subjectPerovskite solar cells
dc.subjectTransparent semiconductors and transistors
dc.titleCopper(I) Thiocyanate (CuSCN) Hole-Transport Layers Processed from Aqueous Precursor Solutions and Their Application in Thin-Film Transistors and Highly Efficient Organic and Organometal Halide Perovskite Solar Cells
dc.typeArticle
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalAdvanced Functional Materials
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Physics and The Centre for Plastic Electronics; Imperial College London; London SW7 2AZ UK
dc.contributor.institutionDepartment of Materials and The Centre for Plastic Electronics; Imperial College London; Royal School of Mines; London SW7 2AZ UK
dc.contributor.institutionDepartment of Physics; National Technical University of Athens; Athens GR-15780 Greece
dc.contributor.institutionDepartment of Materials Science and Engineering; School of Molecular Science and Engineering; Vidyasirimedhi Institute of Science and Technology (VISTEC); Rayong 21210 Thailand
dc.contributor.institutionDepartment of Applied Physics; The Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong
dc.contributor.institutionDepartment of Chemistry and The Centre for Plastic Electronics; Imperial College London; London SW7 2AZ UK
kaust.personAnthopoulos, Thomas D.
dc.date.published-online2017-07-28
dc.date.published-print2017-09


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