全彩色蓄光材料的制备与发光性能分析

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1、为最大发射峰的五个线状峰，这是由2E一4A2跃迁产生的Mn4+的特征发射峰。样品本身几乎不具备发射余辉光的能力，选用蓝(B)、紫色(V)长余辉材料与氟锗酸镁：锰(S)进行混配，混合试样可获得较好的发射红色余辉的性能。混合试样与纯的长余辉材料相比，监测波长为657nm的余辉衰减曲线图中两者的光强存在明显的差值，同时在余辉光谱中可观察到清晰的红色发光峰，这都有力地证实了课题的设计思路。将S和V以不同质量比进行混配，V的余辉发光不能全部用来有效激发S，随着S所占比例的上升，混合试样余辉所发射的复合光色彩越趋向于紫红色光区，质量比S：V为9：1左右时余辉效果比较理想，在

2、1931CIE．xy色度图中的坐标值为(0．2302，0．0492)。关键词：红色长余辉高温固相法可见光激发罗丹明BSr3A1206：Eu3+氟锗酸镁：锰SynthesisandPhotoluminescenceCharacteristicsOftheFull—colorPhosphOrescentMaterialAbs仃actLight．storingmaterialalsoknownaslongafterglowluminescentmaterial，iscapableofabsorbingsunlightorultravioletrayduringthed

3、ay,storingenergyoflightandreleasingtheenergyintheformofvisiblelightwhenthelightisstopped．Atpresent,blueandgreenlongafterglowmaterialshavebeendevelopedmaturely．Comparedwiththeabovetwokindsofcolor'smaterialperformance，onitsilluminationbrightnessandtheaftertimetheredlongafterglowmateria

4、lhasthebigdisparity,therefore，thedevelopmentofredafterglowmaterialwithgoodperformance，hasimportanttheoreticalsignificanceandpracticalvalue．Anewideaofpreparationofredlongafterglowmaterialistobeadoptedinthissubject．Theblue，greenlongafterglowmateri、alswithexcellentperformancewereusedast

5、heexcitationlightsourceandtheirafterglowconstantlyexcitestheredfluorescentmaterialandhasitreleaseredlight．ThentheredlongafterglowmaterialsCanbeindirectlygotten．Inthispaper,weseleetakindoforganicdyesRhodamineBandtwokindsofinorganicmaterialsSr3A1206：Eu3+andmanganese-activatedmagnesiumf

6、luorogermanatewhichweresynthesizedbyhigh-temperaturesolid—statemethodastheredfluorescentmaterials，studytheirluminescenceperformanceandtheiroptimalpreparationroute．Thegoodperformanceofviolet(PLP一6)、blue(PLB-8B)oryellowgreen(PLO-8B)longafterglowmaterialsaremixedwiththeredfluorescentmat

7、erials，andthenthepropertiesofthecompositematerialsCanberesearched．PMMA,whichiscolorless，transparentandhasgoodopticalproperties，ispreparedbyradicalpolymerizationandused雒themixedsamples’carriers．RhodamineB’Sluminescencepropertiesaleinfluencedbyitschemicalenvironmentstrongly．InPMMA，itCa

8、nbeeasymotiv