Time-resolved photoluminescence study of CdSe/CdMnS/CdS core/multi-shell nanoplatelets

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buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage242406-4en_US
dc.citation.issueNumber24en_US
dc.citation.spage242406-1en_US
dc.citation.volumeNumber108en_US
dc.contributor.authorMurphy, J. R.en_US
dc.contributor.authorDelikanli S.en_US
dc.contributor.authorScrace, T.en_US
dc.contributor.authorZhang, P.en_US
dc.contributor.authorNorden, T.en_US
dc.contributor.authorThomay, T.en_US
dc.contributor.authorCartwright, A. N.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.contributor.authorPetrou, A.en_US
dc.date.accessioned2018-04-12T10:47:12Z
dc.date.available2018-04-12T10:47:12Z
dc.date.issued2016en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractWe used photoluminescence spectroscopy to resolve two emission features in CdSe/CdMnS/CdS and CdSe/CdS core/multi-shell nanoplatelet heterostructures. The photoluminescence from the magnetic sample has a positive circular polarization with a maximum centered at the position of the lower energy feature. The higher energy feature has a corresponding signature in the absorption spectrum; this is not the case for the low-energy feature. We have also studied the temporal evolution of these features using a pulsed-excitation/time-resolved photoluminescence technique to investigate their corresponding recombination channels. A model was used to analyze the temporal dynamics of the photoluminescence which yielded two distinct timescales associated with these recombination channels. The above results indicate that the low-energy feature is associated with recombination of electrons with holes localized at the core/shell interfaces; the high-energy feature, on the other hand, is excitonic in nature with the holes confined within the CdSe cores.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T10:47:12Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016en
dc.identifier.doi10.1063/1.4953840en_US
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/11693/36652
dc.language.isoEnglishen_US
dc.publisherAmerican Institute of Physics Inc.en_US
dc.relation.isversionofhttp://dx.doi.org/10.1063/1.4953840en_US
dc.source.titleApplied Physics Lettersen_US
dc.subjectAbsorption spectroscopyen_US
dc.subjectPhotoluminescence spectroscopyen_US
dc.subjectEmission featuresen_US
dc.subjectMagnetic samplesen_US
dc.subjectNano-plateletsen_US
dc.subjectPulsed excitationen_US
dc.subjectRecombination channelsen_US
dc.subjectTemporal dynamicsen_US
dc.subjectTemporal evolutionen_US
dc.subjectTime-resolved photoluminescenceen_US
dc.subjectPhotoluminescenceen_US
dc.titleTime-resolved photoluminescence study of CdSe/CdMnS/CdS core/multi-shell nanoplateletsen_US
dc.typeArticleen_US

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Department of Electrical and Electronics Engineering
Department of Physics
Institute of Materials Science and Nanotechnology (UNAM)