Interplay between multipole expansion of exchange interaction and Coulomb correlation of exciton in colloidal II-VI quantum dots

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dc.contributor.authorKlenovský, Petrcs
dc.contributor.authorValdhans, Jakubcs
dc.contributor.authorKrejčí, Luciecs
dc.contributor.authorValtr, Miroslavcs
dc.contributor.authorKlapetek, Petrcs
dc.contributor.authorFedotova, Olgacs
dc.coverage.issue1cs
dc.coverage.volume4cs
dc.date.accessioned2023-03-08T11:52:41Z
dc.date.available2023-03-08T11:52:41Z
dc.date.issued2022-03-01cs
dc.description.abstractWe study the effect of Coulomb correlation on the emission properties of the ground state exciton in zincblende CdSe/ZnS core-shell and in wurtzite ZnO quantum dots (QDs). We validate our theory model by comparing results of computed exciton energies of CdSe/ZnS QDs to photoluminescence and scanning near-field optical microscopy measurements. We use that to estimate the diameter of the QDs using a simple model based on infinitely deep quantum well and compare the results with the statistics of the atomic force microscopy scans of CdSe/ZnS dots, obtaining excellent agreement. Thereafter, we compute the energy fine structure of exciton, finding striking difference between properties of zincblende CdSe/ZnS and wurtzite ZnO dots. While in the former the fine structure is dominated by the dipole terms of the multipole expansion of the exchange interaction, in the latter system that is mostly influenced by Coulomb correlation. Furthermore, the correlation sizeably influences also the exciton binding energy and emission radiative rate in ZnO dots.en
dc.formattextcs
dc.format.extent12cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationElectronic Structure. 2022, vol. 4, issue 1, 12 p.en
dc.identifier.doi10.1088/2516-1075/ac5b7ecs
dc.identifier.issn2516-1075cs
dc.identifier.other182321cs
dc.identifier.urihttp://hdl.handle.net/11012/209171
dc.language.isoencs
dc.publisherIOP Publishing Ltdcs
dc.relation.ispartofElectronic Structurecs
dc.relation.urihttps://iopscience.iop.org/article/10.1088/2516-1075/ac5b7ecs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2516-1075/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectquantum doten
dc.subjectcolloidalen
dc.subjectmultiparticle statesen
dc.subjectconfiguration interactionen
dc.subjectcorrelationen
dc.subjectAFMen
dc.subjectSNOMen
dc.titleInterplay between multipole expansion of exchange interaction and Coulomb correlation of exciton in colloidal II-VI quantum dotsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-182321en
sync.item.dbtypeVAVen
sync.item.insts2023.03.08 12:52:41en
sync.item.modts2023.03.08 12:14:44en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Vývoj metod analýzy a měřenícs
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