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dc.contributor.authorBohn, Bernhard Jen
dc.contributor.authorTong, Yuen
dc.contributor.authorGramlich, Moritzen
dc.contributor.authorLai, May Lingen
dc.contributor.authorDöblinger, Markusen
dc.contributor.authorWang, Kunen
dc.contributor.authorHoye, Roberten
dc.contributor.authorMüller-Buschbaum, Peteren
dc.contributor.authorStranks, Samuelen
dc.contributor.authorUrban, Alexander Sen
dc.contributor.authorPolavarapu, Lakshminarayanaen
dc.contributor.authorFeldmann, Jochenen
dc.date.accessioned2018-09-08T06:32:26Z
dc.date.available2018-09-08T06:32:26Z
dc.date.issued2018-08en
dc.identifier.issn1530-6984
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/279849
dc.description.abstractmakes them an extremely promising material for light-emitting applications. Whereas high quantum yields and long-term colloidal stability have already been achieved for nanocrystals emitting in the red and green spectral range, the blue region currently lags behind with low quantum yields, broad emission profiles, and insufficient colloidal stability. In this work, we present a facile synthetic approach for obtaining two-dimensional CsPbBr3 nanoplatelets with monolayer-precise control over their thickness, resulting in sharp photoluminescence and electroluminescence peaks with a tunable emission wavelength between 432 and 497 nm due to quantum confinement. Subsequent addition of a PbBr2-ligand solution repairs surface defects likely stemming from bromide and lead vacancies in a subensemble of weakly emissive nanoplatelets. The overall photoluminescence quantum yield of the blue-emissive colloidal dispersions is consequently enhanced up to a value of 73 ± 2%. Transient optical spectroscopy measurements focusing on the excitonic resonances further confirm the proposed repair process. Additionally, the high stability of these nanoplatelets in films and to prolonged ultraviolet light exposure is shown.
dc.description.sponsorshipMagdalene College, Cambridge
dc.format.mediumPrint-Electronicen
dc.languageengen
dc.publisherAmerican Chemical Society (ACS)
dc.rightsAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleBoosting Tunable Blue Luminescence of Halide Perovskite Nanoplatelets through Postsynthetic Surface Trap Repair.en
dc.typeArticle
prism.endingPage5238
prism.issueIdentifier8en
prism.publicationDate2018en
prism.publicationNameNano lettersen
prism.startingPage5231
prism.volume18en
dc.identifier.doi10.17863/CAM.27217
dcterms.dateAccepted2018-07-10en
rioxxterms.versionofrecord10.1021/acs.nanolett.8b02190en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2018-08en
dc.contributor.orcidBohn, Bernhard J [0000-0002-0344-7735]
dc.contributor.orcidTong, Yu [0000-0002-8828-0718]
dc.contributor.orcidWang, Kun [0000-0003-0729-2678]
dc.contributor.orcidHoye, Robert [0000-0002-7675-0065]
dc.contributor.orcidMüller-Buschbaum, Peter [0000-0002-9566-6088]
dc.contributor.orcidStranks, Samuel [0000-0002-8303-7292]
dc.contributor.orcidUrban, Alexander S [0000-0001-6168-2509]
dc.contributor.orcidPolavarapu, Lakshminarayana [0000-0002-9040-5719]
dc.identifier.eissn1530-6992
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idRoyal Society (UF150033)
pubs.funder-project-idEuropean Commission Horizon 2020 (H2020) ERC (756962)


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's licence is described as Attribution 4.0 International (CC BY 4.0)