Hybrid white light sources based on layer-by-layer assembly of nanocrystals on near-UV emitting diodes

buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage405702-1en_US
dc.citation.issueNumber40en_US
dc.citation.spage405702-4en_US
dc.citation.volumeNumber18en_US
dc.contributor.authorNizamoglu, S.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.date.accessioned2019-02-11T06:44:29Z
dc.date.available2019-02-11T06:44:29Z
dc.date.issued2007-09-17en_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.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractWe present the design, growth, fabrication, integration and characterization of alternative hybrid white light sources based on the controlled layer-by-layer assembly of nanocrystals on UV-emitting nitride diodes for adjustable white light parameters. We hybridize CdSe/ZnS core–shell nanocrystals of different sizes (1.9–3.2–5.2 nm) on InGaN/GaN LEDs as a near-UV excitation source at 383 nm for efficient pumping. The first device includes layer-by-layer assembly of dichromatic cyan- and red-emitting nanocrystals (λPL = 504–615 nm) leading to the tristimulus coordinates (x = 0.37,y = 0.46); the second device uses the trichromatic combination of layer-by-layer hybridized cyan-, yellow- and red-emitting nanocrystals (λPL = 504–580–615 nm), yielding (x = 0.38,y = 0.48). Such layer-by-layer hybridization offers the advantages of precisely controlling individual nanocrystal film thicknesses and order in addition to concentrations. By utilizing such multiple combinations of nanocrystals in the assembly, the light parameters are well controlled and adjusted. Leveraging rapidly advancing UV technology into efficient lighting with nanocrystal based color conversion, it is critical to develop and demonstrate hybrid light sources on UV pumping platforms.en_US
dc.identifier.doi10.1088/0957-4484/18/40/405702en_US
dc.identifier.eissn1361-6528
dc.identifier.issn0957-4484
dc.identifier.urihttp://hdl.handle.net/11693/49197
dc.language.isoEnglishen_US
dc.publisherInstitute of Physics Publishing Ltd.en_US
dc.relation.isversionofhttps://doi.org/10.1088/0957-4484/18/40/405702en_US
dc.source.titleNanotechnologyen_US
dc.titleHybrid white light sources based on layer-by-layer assembly of nanocrystals on near-UV emitting diodesen_US
dc.typeArticleen_US

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