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Embodiment of the warm white-light-emitting diodes by using a Ba2 codoped Sr3SiO5 Eu phosphor.pdf

Embodiment of the warm white-light-emitting diodes by using a Ba2 codoped Sr3SiO5 Eu phosphor.pdf

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时间：2019-03-04

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1、Embodimentofthewarmwhite-light-emittingdiodesbyusingaBa2+codopedSr3SiO5:EuphosphorJoungKyuPark,KyoungJaeChoi,JeongHoYeon,SeungJaeLee,andChangHaeKimCitation:Appl.Phys.Lett.88,043511(2006);doi:10.1063/1.2166471Viewonline:http://dx.doi.org/10.1063/1.2166471ViewTableofContents:http://apl.aip.org/resou

2、rce/1/APPLAB/v88/i4PublishedbytheAmericanInstituteofPhysics.AdditionalinformationonAppl.Phys.Lett.JournalHomepage:http://apl.aip.org/JournalInformation:http://apl.aip.org/about/about_the_journalTopdownloads:http://apl.aip.org/features/most_downloadedInformationforAuthors:http://apl.aip.org/authors

3、Downloaded10Oct2012to114.213.250.49.RedistributionsubjecttoAIPlicenseorcopyright;seehttp://apl.aip.org/about/rights_and_permissionsAPPLIEDPHYSICSLETTERS88,0435112006Embodimentofthewarmwhite-light-emittingdiodesbyusingaBa2+codopedSr3SiO5:EuphosphoraJoungKyuPark,KyoungJaeChoi,JeongHoYeon,SeungJae

4、Lee,andChangHaeKimAdvancedMaterialsDivision,KRICT,Daejon305-600,KoreaReceived11August2005;accepted22November2005;publishedonline27January2006Theshiftsoftheemissionbandtolongerwavelengthyellow-orangeoftheSr3SiO5:Euyellowphosphorunderthe450470nmexcitationrangehavebeenachievedbyaddingthecodopinge

5、lementBa2+inthehost.Inordertoapplytowhite-light-emittingdiodesLEDswithwarmwhiteandhighcolorrenderingindex,wehavefabricatedwhiteLEDsthroughtheintegrationoftheInGaNblueLEDchipandthetwophosphorblendsSrSiO:Euyellowphosphor+Ba2+co-doped24Sr3SiO5:Euyellow-orangephosphorintoasinglepackage.Byemployi

6、ngtwophosphors,coveringaredregion,thewhiteLEDsshowawarmwhiteintherangeof25005000Kcorrelatedcolortemperatureandagoodcolorrenderingofover85.©2006AmericanInstituteofPhysics.DOI:10.1063/1.2166471TherearebasicallytwoapproachestogeneratingwhiteingpowderswereidentifiedusingaRigakuD/MAX-2200V13lightfroml

7、ight-emittingdiodesLEDs.Thefirstap-x-raydiffractionXRDsystemwithCuKradiationNiproachistomixlightofdifferentcolorsemittedbydifferentfilter.Theluminescentcharacteristicsoffiredsampleswerechips.Anotherapproachis

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