Selective enhancement of surface-state emission and simultaneous quenching of interband transition in white-luminophor CdS nanocrystals using localized plasmon coupling

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buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage083035-1en_US
dc.citation.spage083035-9en_US
dc.citation.volumeNumber10en_US
dc.contributor.authorOzel, T.en_US
dc.contributor.authorSoganci, I. M.en_US
dc.contributor.authorNizamoglu, S.en_US
dc.contributor.authorHuyal I.O.en_US
dc.contributor.authorMutlugun, E.en_US
dc.contributor.authorSapra, S.en_US
dc.contributor.authorGaponik N.en_US
dc.contributor.authorEychmüller A.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.date.accessioned2016-02-08T10:10:13Z
dc.date.available2016-02-08T10:10:13Z
dc.date.issued2008en_US
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractWe propose and demonstrate the controlled modification and selective enhancement of surface-state emission in white-luminophor CdS nanocrystals (NCs) by plasmon-coupling them with proximal metal nanostructures. By carefully designing nano-Ag films to match their localized plasmon resonance spectrally with the surface-state emission peak of CdS NCs, we experimentally show that the surface-state emission is substantially enhanced in the visible wavelength, while the interband (band-edge) transition at the shorter wavelength far away from the plasmon resonance is simultaneously significantly suppressed. With such plasmon tuning and consequent strong plasmon coupling specifically for the surface-state transitions, the surface-state emission is made stronger than the band-edge emission. This corresponds to an enhancement factor of 12.7-fold in the ratio of the surface-state peak emission to the band-edge peak emission of the plasmon-coupled film sample compared with that in solution. Such a plasmonic engineering of surface-state emission in trap-rich CdS white nanoluminophors holds great promise for future solid-state lighting.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:10:13Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2008en
dc.identifier.doi10.1088/1367-2630/10/8/083035en_US
dc.identifier.eissn1367-2630
dc.identifier.urihttp://hdl.handle.net/11693/23199
dc.language.isoEnglishen_US
dc.publisherInstitute of Physics Publishing Ltd.en_US
dc.relation.isversionofhttp://doi.org/10.1088/1367-2630/10/8/083035en_US
dc.source.titleNew Journal of Physicsen_US
dc.titleSelective enhancement of surface-state emission and simultaneous quenching of interband transition in white-luminophor CdS nanocrystals using localized plasmon couplingen_US
dc.typeArticleen_US

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