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dc.contributor.authorSaidaminov, Makhsud I.
dc.contributor.authorAlmutlaq, Jawaher
dc.contributor.authorSarmah, Smritakshi P.
dc.contributor.authorDursun, Ibrahim
dc.contributor.authorZhumekenov, Ayan A.
dc.contributor.authorBegum, Raihana
dc.contributor.authorPan, Jun
dc.contributor.authorCho, Nam Chul
dc.contributor.authorMohammed, Omar F.
dc.contributor.authorBakr, Osman
dc.date.accessioned2017-04-10T07:49:51Z
dc.date.available2017-04-10T07:49:51Z
dc.date.issued2016-09-29
dc.identifier.citationSaidaminov MI, Almutlaq J, Sarmah S, Dursun I, Zhumekenov AA, et al. (2016) Pure Cs4PbBr6: Highly Luminescent Zero-Dimensional Perovskite Solids. ACS Energy Letters 1: 840–845. Available: http://dx.doi.org/10.1021/acsenergylett.6b00396.
dc.identifier.issn2380-8195
dc.identifier.issn2380-8195
dc.identifier.doi10.1021/acsenergylett.6b00396
dc.identifier.urihttp://hdl.handle.net/10754/623102
dc.description.abstractSo-called zero-dimensional perovskites, such as Cs4PbBr6, promise outstanding emissive properties. However, Cs4PbBr6 is mostly prepared by melting of precursors that usually leads to a coformation of undesired phases. Here, we report a simple low-temperature solution-processed synthesis of pure Cs4PbBr6 with remarkable emission properties. We found that pure Cs4PbBr6 in solid form exhibits a 45% photoluminescence quantum yield (PLQY), in contrast to its three-dimensional counterpart, CsPbBr3, which exhibits more than 2 orders of magnitude lower PLQY. Such a PLQY of Cs4PbBr6 is significantly higher than that of other solid forms of lower-dimensional metal halide perovskite derivatives and perovskite nanocrystals. We attribute this dramatic increase in PL to the high exciton binding energy, which we estimate to be ∼353 meV, likely induced by the unique Bergerhoff–Schmitz–Dumont-type crystal structure of Cs4PbBr6, in which metal-halide-comprised octahedra are spatially confined. Our findings bring this class of perovskite derivatives to the forefront of color-converting and light-emitting applications.
dc.description.sponsorshipThe authors acknowledge the support of King Abdullah University of Science and Technology (KAUST).
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttp://pubs.acs.org/doi/full/10.1021/acsenergylett.6b00396
dc.rightsThis is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
dc.rights.urihttp://pubs.acs.org/page/policy/authorchoice_termsofuse.html
dc.titlePure Cs4PbBr6: Highly Luminescent Zero-Dimensional Perovskite Solids
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentFunctional Nanomaterials Lab (FuNL)
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentUltrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
dc.identifier.journalACS Energy Letters
dc.eprint.versionPublisher's Version/PDF
kaust.personSaidaminov, Makhsud I.
kaust.personAlmutlaq, Jawaher
kaust.personSarmah, Smritakshi P.
kaust.personDursun, Ibrahim
kaust.personZhumekenov, Ayan A.
kaust.personBegum, Raihana
kaust.personPan, Jun
kaust.personCho, Nam Chul
kaust.personMohammed, Omar F.
kaust.personBakr, Osman M.
refterms.dateFOA2018-06-14T04:47:45Z
dc.date.published-online2016-09-29
dc.date.published-print2016-10-14


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