Energy-saving quality road lighting with colloidal quantum dot nanophosphors

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buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage381en_US
dc.citation.issueNumber6en_US
dc.citation.spage373en_US
dc.citation.volumeNumber3en_US
dc.contributor.authorErdem, T.en_US
dc.contributor.authorKelestemur, Y.en_US
dc.contributor.authorSoran-Erdem, Z.en_US
dc.contributor.authorJi, Y.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.date.accessioned2016-02-08T10:35:14Z
dc.date.available2016-02-08T10:35:14Z
dc.date.issued2014en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractHere the first photometric study of road-lighting white light-emitting diodes (WLEDs) integrated with semiconductor colloidal quantum dots (QDs) is reported enabling higher luminance than conventional light sources, specifically in mesopic vision regimes essential to street lighting. Investigating over 100 million designs uncovers that quality road-lighting QD-WLEDs, with a color quality scale and color rendering index ≥85, enables 13-35% higher mesopic luminance than the sources commonly used in street lighting. Furthermore, these QD-WLEDs were shown to be electrically more efficient than conventional sources with power conversion efficiencies ≥16-29%. Considering this fact, an experimental proof-of-concept QD-WLED was demonstrated, which is the first account of QD based color conversion custom designed for street lighting applications. The obtained white LED achieved the targeted mesopic luminance levels in accordance with the road lighting standards of the USA and the UK. These results indicate that road-lighting QD-WLEDs are strongly promising for energy-saving quality road lighting. © 2014 Science Wise Publishing & De Gruyter 2014.en_US
dc.identifier.doi10.1515/nanoph-2014-0016en_US
dc.identifier.issn21928606
dc.identifier.urihttp://hdl.handle.net/11693/24847
dc.language.isoEnglishen_US
dc.publisherWalter de Gruyter GmbHen_US
dc.relation.isversionofhttp://dx.doi.org/10.1515/nanoph-2014-0016en_US
dc.source.titleNanophotonicsen_US
dc.subjectlight-emitting diodes (LEDs)en_US
dc.subjectmesopic visionen_US
dc.subjectoutdoor lightingen_US
dc.subjectphotometric designen_US
dc.subjectquantum dots (QDs)en_US
dc.subjectColoren_US
dc.subjectEnergy conservationen_US
dc.subjectLight sourcesen_US
dc.subjectLuminanceen_US
dc.subjectPhotometryen_US
dc.subjectRoads and streetsen_US
dc.subjectSemiconductor diodesen_US
dc.subjectSemiconductor quantum dotsen_US
dc.subjectStreet lightingen_US
dc.subjectTransportationen_US
dc.subjectColloidal quantum dotsen_US
dc.subjectColor conversionsen_US
dc.subjectColor rendering indexen_US
dc.subjectConventional light sourcesen_US
dc.subjectLighting applicationsen_US
dc.subjectMesopic visionen_US
dc.subjectPower conversion efficienciesen_US
dc.subjectWhite lightemitting diodes (WLEDs)en_US
dc.subjectLight emitting diodesen_US
dc.titleEnergy-saving quality road lighting with colloidal quantum dot nanophosphorsen_US
dc.typeArticleen_US
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