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ID:32139257
大小:2.38 MB
页数:50页
时间:2019-01-31
《le某高效散热与配光技术分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、wegettheconceptofpointinglayersphosphor.Firstpreparationofhi曲powerLED,thencoatorganicmaterialDCJTBonphosphor.ItsproportionisO%、l%、2%、3%、5%、10%.Thenstudytheluminescentbytestingexcitationspectrum.Itisfoundthatpointinglayersphosphornotonlycanimprovetheluminescentproperties,
2、butalsocolorrenderingindexofLED.Meanwhile,wecanavoidtheabsorptionofDCJTBtoYAG:Ce,卜phosphorintheyellow-greenlightbypointinglayersphosphor.Tofurtherstudytheinfluenceofthe·organicthinfilmlayerforhi曲-powerLEDcolorrenderingindex,wedepositorganicmaterialAlq3:C545TandAlq3ontheg
3、lassbyvacuumevaporation.ThenirradiateorganicthinfilmAlq3:C545TandAlq3byhighpowerblueLED.ThenstudytheluminescentofAlq3:C545TtoblueLEDbytestingexcitationspectrumandtheluminescenceefficiencyoftheorganicthinfilmlayerbycomparingAlq3:C545TandAlq3.Theresultsshowthat:hi曲powerLED
4、canstimulateAlq3:C545Tgeneratingyellowandgreenspectrumandthespectrummovestowhiteregion.Therefore,organicmaterialAlq3:C545TCanimprovetheluminousefficiencyandluminousfluxofLEDsignificantly.OrganicmaterialC545TCaneffectivelyincreaseintheexcitationspectrumoftheyellowgreenreg
5、ion.Bythemethodofspin—coating,alayeroforganicmaterialMPPVdissolvedinorganicsolventTetrahydrofuran(邢)iscoatedonglass.TheradiosofMPPV:THFare"25mg-lml、50mg-lml、100mg:lml、150mg-lml.WeirradiateorganicthinfilmbyblueandwhiteLED.Thenstudytheluminescentbytestingexcitationspectrum
6、.Theresultsshowthat:withthemethodofblueandwhiteLEDexcitingtheorganicmaterialMPPV,thecolor-renderingindexandluminescentpropertiesofLEDCanbeimprovedsignificantly.Therefore,organicmaterialMPPVCanabsorbtheenergyofLEDchipandhaslittleabsorptiontothegreenregionexcitedbytheYAG:C
7、e,卜phosphor.KEYWORDS:LightEmittingDiode,ThermalManagement,OrganicMaterial,Color-renderingIndex,LuminescenceIV目录摘要⋯⋯⋯.:⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯:⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯IABSTRACT⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯:⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯III1绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11.1LED的
8、发展历史及国内外研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.11.1.1LED的发展历史⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11.1.2LED国外研究现状及发展概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
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