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1.
Temperature Dependence of Red Long Afterglow from Y_2O_2S∶Eu, Ti, Mg 相似文献
2.
Nanometermaterialshaveattractedagreatdealofattentioninthelastdecadebecauseoftheirgreatpo tentialfornanotechnologicalapplicationsandforun derstandingsomefundamentalconceptsabouttherolesofdimensionalityandsizein ,forexample ,optical ,electrical ,andmechanicalproperties[1,2 ] .Differentshapes ,suchasparticles ,films ,wires ,andtubes ,havebeenfabricatedwithvarioustechniques[3~ 6 ] .Inparticular ,thenanotubesusuallypresentnovelproper tiesassociatingwiththeirsmalldimensions ,highanisotropy ,andintr… 相似文献
3.
Preparation of Stable CaS∶Eu~(2+), Tm~(3+) Phosphor 总被引:1,自引:0,他引:1
Alkalineearthsulfides (AES)havebeenfoundtobeexcellentandversatilephosphor ,andrareearthsasactivatorshavebeenintensivelyinvestigated[1~ 7] .Theyholdpromiseforapplicationsinphoto ,electro ,cathoderay ,fieldemissiondisplaysandluminescencepaints[8,9] .However ,alkalineearthsulfidesasaphos phorhosthavebeenfoundtobelimitedinapplica tion ,duemainlytoitssensitivetomoistureandotheratmosphericcomponents .Theirchemicalstabilityagainstatmosphericcarbondioxideandmoisturecouldbeenhancedthroughthegoodcryst… 相似文献
4.
Longafterglowphosphorabsorbingenergyfromsolar,lampandotherlightsourcesforashorttimestorestheenergyandexhibitsbrightandlong lastingphosphorescencewhichsuitsthevisualperceptionofthehumaneyewithminimumbrightness 0 32mcd·m- 2 andlastingtimemorethan 8h) .TheSrAl2 O4 ∶Eu2 +,Dy3+phosphorhasbeenknowntobeagreenlongafterglowphosphorwithanemissionpeakat 5 2 0nm[1~ 7] .ThepropertiesofthephosphorwerefurtherexaminedbythegroupofTangMingdaoandMatsuzawaTindetailin 1995and 1996respectively[1,2 ] .Inorde… 相似文献
5.
Nanoparticlesandnanoclustermaterialsareanewclassofadvancedmaterialsexhibit inguniquechemicalandphysicalpropertiescomparedtothoseoftheirbulkmaterials[1 ] .Y2 O3 :Euisanefficientred emissionphosphorwhichhasbeenusedinfluorescentlights (FL)andcathoderaytube (CRTs… 相似文献
6.
Longphosphorescencephosphorshaveattractedconsiderableattentioninrecenthalf century[1] becauseoftheirpotentialapplicationsinsuchfieldsaslumi nouspaint ,safetyindicatorinemergencycase ,etc[2~ 4 ] .Sincethediscoveryofalkali earthaluminatelonglastingphosphorsin 1996 [1] ,theyhavebeenstudiedextensivelyastheyhavebetterstabilityandlongerpersistenttimethanthesulfidephosphorswhichwerewidelyusedinmanycases .Uptonow ,poly crystallinephosphorsofblueCaAl2 O4 ∶ (Eu2 ,Nd3 ) ,greenSrAl2 O4 ∶(Eu2 ,… 相似文献
7.
Animportantclassoffluorescentlampandplasmadisplayphosphorsisbasedoncom poundsofthealkaliearth rareearthaluminatesystemsbecauseoftheirhighluminescenteffi ciencyandstabilityunderultravioletandvacu umultravioletlightexcitation[1] .Especially ,alkalineearthhe… 相似文献
8.
阴极射线管(CRT)用Y_2O_2S∶Eu红粉的市场、生产和研究 总被引:1,自引:0,他引:1
Y2O2S∶Eu是目前彩电和显示器中广泛使用的红色荧光粉,本文对近年来国内外对Y2O2S∶Eu红粉的市场需求和研究状况以及我国的生产状况进行了综述。 相似文献
9.
Yuan Jianhui 《中国稀土学报(英文版)》2005,(4)
Effects of Doping Trace Sm~(3+) and Gd~(3+) on Luminescent Character of Y_2O_2S∶Eu~(3+) 相似文献
10.
Agrowinginterestandpromisingpotentialofhighpowersolidstatelasershavebeenshowninmanyhightechnicalengineeringfields.Insolidstatelasers,oneofthekeyopticalpartsisthepumpingcavitywhichreflectsthelamplighttolaseractivecrystalsource.Intermsofthisapplication,t… 相似文献
11.
Synthesis of YAG∶Ce~(3+) Phosphor by Polyacrylamide Gel Method and Promoting Action of α-Al_2O_3 Seed Crystal on Phase Formation 总被引:3,自引:0,他引:3
Cerium activatedyttriumaluminumgarnet Y3Al5O12(YAG∶Ce3+)isknownasanefficientphos phor,whichhasstrongyellowluminescencewhenex citedbybluephotons.Therefore,YAG∶Ceisideally suitedforluminescenceconversionofbluelightemit tingdiodes[1,2],andusedintheassemblingofwhite lightemittingdiode(wLED),sinceblueandyellow arecomplementarycolors.Suchdiodesarenowcom merciallyavailable[2].HighluminancewhiteLEDhas beenarousedattentionaroundworldduetoitslighting withnohydrargyrum,highefficiencyandlonglife.… 相似文献
12.
Gd2 O3isagoodhostmaterialforluminescenceandhasbeenstudiedwelltheseyears .Gd2 O3dopedwithrareearth (RE)ionsisanidealsystemforfunda mentalresearchsuchasenergytransfer[1] .Moreover ,Gd2 O3∶REhasextensiveuse .Especially ,asahighefficientred emissionluminescentmaterial ,cubicGd2 O3∶EuhasbeenwidelyusedinX rayscintillatormaterial ,highdefinitionprojectiontelevisions ,flatpaneldisplaysandphotoelectronicapparatus[2 ,3] .Inthepastcoupleofdecades ,therehasbeenadramaticgrowthofinterestinnanocrystal… 相似文献
13.
Gd2 O3∶Eu3+ isanefficientredemittinglumines centmaterial ,whichcanbeappliedindisplays[1,2 ] .TheconventionalcommercialGd2 O3∶Eu3+ ismainlysynthesizedbyhightemperaturesolid statereactionandchemicalco precipitationmethods .Anadvancedperformanceofdisplaysrequireshighqualityphospho rssuchashighbrightnessandefficiency ,monodisper sityandfinegrainsize .Muchresearchhasanticipatedthatsubmicrometer sizedandnanometerluminescentmaterialswillhavethesepotentialadvantages[3~ 8] ,sosubmicrometer sizedan… 相似文献
14.
Inrecentyears ,SrAl2 O4 ∶Eu2 ,Dy3 ,CaAl2 O4 ∶Eu2 ,Nd3 [1~ 8] andBaAl2 O4 ∶Eu2 ,Dy3 [9]havebeenconsideredasusefulblueandgreenphos phorsbytheirlongdurationphosphorescence .Howev er ,toourknowledge ,thephosphorBa1-xCaxAl2 O4 ∶Eu2 ,Dy3 hasnotbeeninvestigated .TheluminescenceofEu2 isverystronglydepen dentonthehostlattice ,whichcanoccurfromtheul traviolettotheredregionoftheelectromagneticspec trum .Itiswellknownthatthepersistentluminescenceisduetothetrappingofenergyinthed… 相似文献
15.
Preparation and Upconversion Luminescence of Y_3Al_5O_(12):Yb~(3+),Er~(3+)Transparent Ceramics 总被引:1,自引:0,他引:1
Crystalline Y3Al5O12(YAG) exists in the cubicform,having a garnet structure[1 ,2],and has excellentchemical stability ,good optical and high temperaturecreep chemical stability[3 ~5]. YAG single crystal hasdrawn considerable attention since the early 1960s ,asit isthei mportant crystal forfluorescent andsolid-statelasers . However ,it is hard to prepare large size sam-ples and dope high concentrationions in YAGcrystal .Conversely ,the fabrication of YAGtransparent ceram-ics is relatively… 相似文献
16.
The PDP have been widely used for large flatpanel displays.Phosphors for the application in PDPare required to have high conversion efficiency by theVUVradiation of147and/or172nmfromthe Xe andXe-He gas plasma[1].In order to have a good picturequality,much attention has been paid to i mprove ordevelop novel PDP phosphors[2~6].The commercialred emitting PDP phosphor(Y,Gd)BO3∶Eu3+showsthree sharp emissions peaked at593,612and627nm,which are corresponding to the transitions of5D0→7F1,5… 相似文献
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18.
BaFBr∶Eu2 +,asphoto gatedholeburningmateri al[1] ,scintillatorcrystallinematerialandX rayimagestoragematerial ,iscalledphotostimulatedluminescence(PSL)material[2 ] .Theimagingplate (IP)madeofthesephosphorsisnowusedwidelyasdisplayoftwo dimen sionalimagescausedbyionizationradiation[3] .Thecommercialapplicationofthesematerialsbe ganin 1983.Becauseofapplicationofthesephospho rs ,theconventionalX rayfilmmaybereplacedbythescreenmadeofPSLphosphors (alsocalledimagingplate ,IP) [4 ] .IPhasnotab… 相似文献
19.
Preparation and Photoluminescent Properties of β-Ga_2O_3∶Dy Nanorod Arrays 相似文献
20.
Er∶YVO4andEr∶GdVO4lasercrystalshavebeen widelystudiedandusedinlaser diodepumpedsolid statelasersfortheirgoodlaserproperties[1~4].Howev er,thethermalconductivityofEr∶YVO4crystalislow andthecrystaliseasytodecompose.ThoughEr∶GdVO4lasercrystalhasanexcell 相似文献