Temperature-dependent emission kinetics of colloidal semiconductor nanoplatelets strongly modified by stacking

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dc.authorid0000-0003-1793-112Xen_US
dc.authorid0000-0003-1616-2728en_US
dc.authorid0000-0003-2212-965Xen_US
dc.authorid0000-0002-6250-6977
dc.authorid0000-0003-1977-6485
dc.contributor.authorErdem, Onur
dc.contributor.authorOlutaş, Murat
dc.contributor.authorGüzeltürk, Burak
dc.contributor.authorKeleştemur, Yusuf
dc.contributor.authorDemir, Hilmi Volkan
dc.date.accessioned2021-06-23T19:43:52Z
dc.date.available2021-06-23T19:43:52Z
dc.date.issued2016
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractWe systematically studied temperature-dependent emission kinetics in solid films of solution-processed CdSe nanoplatelets (NPLs) that are either intentionally stacked or nonstacked. We observed that the steady-state photoluminescence (PL) intensity of nonstacked NPLs considerably increases with decreasing temperature, whereas there is only a slight increase in stacked NPLs. Furthermore, PL decay time of the stacked NPL ensemble is comparatively much shorter than that of the nonstacked NPLs, and this result is consistent at all temperatures. To account for these observations, we developed a probabilistic model that describes excitonic processes in a stack using Markov chains, and we found excellent agreement between the model and experimental results. These findings develop the insight that the competition between the radiative channels and energy transfer assisted hole trapping leads to weakly temperature-dependent PL intensity in the case of the stacked NPL ensembles as compared to the nonstacked NPLs lacking strong energy transfer. This study shows that it is essential to account for the effect of NPL stacking to understand their resulting PL emission properties.en_US
dc.identifier.doi10.1021/acs.jpclett.5b02763
dc.identifier.endpage554en_US
dc.identifier.issn1948-7185
dc.identifier.issue3en_US
dc.identifier.pmid26789646en_US
dc.identifier.scopus2-s2.0-84957596900en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage548en_US
dc.identifier.urihttps://doi.org/10.1021/acs.jpclett.5b02763
dc.identifier.urihttps://hdl.handle.net/20.500.12491/8871
dc.identifier.volume7en_US
dc.identifier.wosWOS:000369774400030en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.institutionauthorOlutaş, Murat
dc.language.isoenen_US
dc.publisherAmer Chemical Socen_US
dc.relation.ispartofJournal Of Physical Chemistry Lettersen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCdSe Nanoplateletsen_US
dc.subjectMarkov Chains
dc.subjectPhotoluminescence
dc.subjectColloidal
dc.subjectSemiconductor Nanoplatelets
dc.titleTemperature-dependent emission kinetics of colloidal semiconductor nanoplatelets strongly modified by stackingen_US
dc.typeArticleen_US

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