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dc.contributor.authorNi, Chengsheng
dc.contributor.authorHedley, Gordon James
dc.contributor.authorPayne, Julia Louise
dc.contributor.authorSvrcek, Vladimir
dc.contributor.authorMcDonald, Calum
dc.contributor.authorKrishnan Jagadamma, Lethy
dc.contributor.authorEdwards, Paul
dc.contributor.authorMartin, Robert
dc.contributor.authorJain, Gunisha
dc.contributor.authorCarolan, Darragh
dc.contributor.authorMariotti, Davide
dc.contributor.authorMaguire, Paul
dc.contributor.authorSamuel, Ifor David William
dc.contributor.authorIrvine, John Thomas Sirr
dc.identifier.citationNi , C , Hedley , G J , Payne , J L , Svrcek , V , McDonald , C , Krishnan Jagadamma , L , Edwards , P , Martin , R , Jain , G , Carolan , D , Mariotti , D , Maguire , P , Samuel , I D W & Irvine , J T S 2017 , ' Charge carrier localised in zero-dimensional (CH 3 NH 3 ) 3 Bi 2 1 9 clusters ' , Nature Communications , vol. 8 , 170 , pp. 1-7 .
dc.identifier.otherPURE: 250336061
dc.identifier.otherPURE UUID: 9de1e823-176e-4738-bf90-816175131816
dc.identifier.otherScopus: 85026523430
dc.identifier.otherWOS: 000406738500006
dc.identifier.otherORCID: /0000-0003-3324-6018/work/60888220
dc.identifier.otherORCID: /0000-0002-8394-3359/work/68280591
dc.identifier.otherORCID: /0000-0002-4339-2484/work/70234028
dc.description.abstractA metal-organic hybrid perovskite (CH3NH3PbI3) with three-dimensional framework of metal-halide octahedra has been reported as a low-cost, solution-processable absorber for a thin-film solar cell with a power-conversion efficiency over 20%. Low-dimensional layered perovskites with metal halide slabs separated by the insulating organic layers are reported to show higher stability, but the efficiencies of the solar cells are limited by the confinement of excitons. In order to explore the confinement and transport of excitons in zero-dimensional metal–organic hybrid materials, a highly orientated film of (CH3NH3)3Bi2I9 with nanometre-sized core clusters of Bi2I93− surrounded by insulating CH3NH3+ was prepared via solution processing. The (CH3NH3)3Bi2I9 film shows highly anisotropic photoluminescence emission and excitation due to the large proportion of localised excitons coupled with delocalised excitons from intercluster energy transfer. The abrupt increase in photoluminescence quantum yield at excitation energy above twice band gap could indicate a quantum cutting due to the low dimensionality.
dc.relation.ispartofNature Communicationsen
dc.rights© The Author(s) 2017. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit licenses/by/4.0/en
dc.subjectQD Chemistryen
dc.subjectT Technologyen
dc.titleCharge carrier localised in zero-dimensional (CH3NH3)3Bi219 clustersen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.description.statusPeer revieweden

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