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1、白光led与荧光粉之特性探讨（PropertiesofwhitelightLEDandphosphors）PropertiesofwhitelightLEDandphosphors6-30Lighting(Lighting)anddisplay(Display)isthetwomostphotovoltaicindustryisanimportantareaofdevelopment,whiletheglobalfossilenergyexhaustionandenvironmentalpollutionhavebecomein
2、creasinglyserious,whiteLEDcanalsomeetthedoublecharacteristicof"energysaving"and"environmentalprotection"(LightEmittingDiode),thelightinganddisplayapplicationsthedevice,inrecentyearsattractedmuchattentionandhighpriority.WhiteLEDbecauseofhavingthecharacteristicsofbothe
3、nergysavingandenvironmentalprotection,generallywillbearevolutionarylightsourcetoreplacethehotlampandfluorescentlamp;andthefluorescentmaterialsarethekeymaterialsoflightinganddisplaydevice,especiallysincetherapiddevelopmentofhighbrightnessLED,andagainattractedmuchatten
4、tion.ThewhiteLEDhasmadeanumberoffeasibleways,whichmadebyfluorescentpowderforwhiteLED,hastheadvantagesofsimplemanufacture,lowcostandeasydrivingetc,onthefutureoflightinganddisplayapplications,whichwillplayanimportantrole.Atpresent,therearethreewaystomakemorecommonwhite
5、LED,thefirstoneisthered,greenandbluecolor,dolightmixingsecondkinds;istheuseofultravioletLEDlightandfluorescentpowderbyred,greenandblue,andmixedwhitelight;thethirdistousetheblueonyellowphosphor.Mixedwhitelight.TheuseofmultiplecurrentphosphidehighbrightnessLEDmajority(
6、suchasInGaAlP)ornitride(InGaN)semiconductormaterialsproducedbythelightcolorduetotheluminescencemechanismandmaterialgapconstraints,thereforetheyallbelongtothenarrowwidthofthemonochromaticlight.Asforlightinganddisplayapplications,mostofthemneedtousewhitelightsource.Ifw
7、euseLEDtomakewhitelightsource,wemustapplythetechnologyofcombinationoflightandcolortoachievethepurposeofobtainingwhitelight.AtpresentallkindsoffeasibletechnologyportfoliointhecolorofwhiteLED,usingsinglechipLED(Single-chipLED)combinedwithvarioustypesoffluorescentmateri
8、altochangecolorandlightmixingeffect,itisoneofthemostconvenientandmostcost-effectiveway,andtheapplicationofinorganicphosphor(Phospho
