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dc.contributor.authorKahmann, Simon
dc.contributor.authorDuim, H
dc.contributor.authorRommens, AJ
dc.contributor.authorTekelenburg, EK
dc.contributor.authorShao, S
dc.contributor.authorLoi, MA
dc.date.accessioned2021-11-22T14:47:57Z
dc.date.available2021-11-22T14:47:57Z
dc.date.issued2021-11
dc.date.submitted2021-05-05
dc.identifier.issn2195-1071
dc.identifier.otheradom202100892
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/330913
dc.description.abstractAbstract: The photophysics of 2D perovskites incorporating 1,4‐phenylenedimethanammonium (PDMA) as spacer cations is studied. PDMAPbI4 and PDMASnI4 exhibit absorption and luminescence spectra dominated by excitonic transitions and an emission due to two different states. Low‐temperature studies reveal a time‐dependent red shift of 12 meV that is correlated with grain‐specific luminescence spectra observed in optical micrographs. For the Pb‐variant, grains of red‐shifted and lower intensity band edge emission simultaneously exhibit a more pronounced luminescence from a broad defect‐related band around 2 eV. This suggests the grain‐specific emission to be related to local defects. These observations have important consequences for the understanding of luminescence of 2D perovskites, for which peak splitting of the band edge emission is a common, yet not completely resolved observation.
dc.languageen
dc.publisherWiley
dc.subjectResearch Article
dc.subjectResearch Articles
dc.subjectconfocal microscopy
dc.subjectdefects
dc.subjectDion–Jacobson
dc.subjectexcitons
dc.subjectmetal halide perovskites
dc.subjectphotoluminescence
dc.titleGrain-Specific Transitions Determine the Band Edge Luminescence in Dion–Jacobson Type 2D Perovskites
dc.typeArticle
dc.date.updated2021-11-22T14:47:56Z
prism.issueIdentifier22
prism.publicationNameAdvanced Optical Materials
prism.volume9
dc.identifier.doi10.17863/CAM.78356
rioxxterms.versionofrecord10.1002/adom.202100892
rioxxterms.versionAO
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.contributor.orcidKahmann, Simon [0000-0001-7784-5333]
dc.contributor.orcidDuim, H [0000-0002-5126-0000]
dc.contributor.orcidTekelenburg, EK [0000-0001-8962-5434]
dc.contributor.orcidShao, S [0000-0001-7005-8484]
dc.contributor.orcidLoi, MA [0000-0002-7985-7431]
dc.identifier.eissn2195-1071
pubs.funder-project-idDeutsche Forschungsgemeinschaft (408012143)
pubs.funder-project-idNederlandse Organisatie voor Wetenschappelijk Onderzoek (739.017.005)
cam.issuedOnline2021-09-12


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