Quantum efficiency enhancement in nanocrystals using nonradiative energy transfer with optimized donor-acceptor ratio for hybrid LEDs

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buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage243107-3en_US
dc.citation.issueNumber24en_US
dc.citation.spage243107-1en_US
dc.citation.volumeNumber94en_US
dc.contributor.authorNizamoglu, S.en_US
dc.contributor.authorAkin, O.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.date.accessioned2015-07-28T12:06:29Z
dc.date.available2015-07-28T12:06:29Z
dc.date.issued2009-06-17en_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractThe quantum efficiency enhancement in nanocrystal solids is critically important for their efficient use as luminophors on color-conversion light emitting diodes (LEDs). For this purpose, we investigate energy gradient mixture of nanocrystal solids for recycling their trapped excitons by varying their donor-acceptor nanocrystal ratios and study the resulting quantum efficiency enhancement as a function of the donor-acceptor ratio in the solid film for hybrid LEDs. We achieve a maximum quantum efficiency enhancement of 17% in these nanocrystal solids when the donor-acceptor ratio is 1:1, demonstrating their highly modified time-resolved photoluminescence decays to reveal the kinetics of strong energy transfer between them.en_US
dc.description.provenanceMade available in DSpace on 2015-07-28T12:06:29Z (GMT). No. of bitstreams: 1 10.1063-1.3141516.pdf: 527740 bytes, checksum: 7f3b7bc6b42f6a64cbe958f84df0a291 (MD5)en
dc.identifier.doi10.1063/1.3141516en_US
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/11693/13465
dc.language.isoEnglishen_US
dc.publisherAmerican Institute of Physicsen_US
dc.relation.isversionofhttp://dx.doi.org/10.1063/1.3141516en_US
dc.source.titleApplied Physics Lettersen_US
dc.subjectCadmium compoundsen_US
dc.subjectExcitonsen_US
dc.subjectIi-vi semiconductorsen_US
dc.subjectLight emitting diodesen_US
dc.subjectNanostructured materialsen_US
dc.subjectPhosphorsen_US
dc.subjectPhotoluminescenceen_US
dc.subjectTime resolved spectraen_US
dc.subjectWide band gap semiconductorsen_US
dc.subjectZinc compoundsen_US
dc.titleQuantum efficiency enhancement in nanocrystals using nonradiative energy transfer with optimized donor-acceptor ratio for hybrid LEDsen_US
dc.typeArticleen_US

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