氟氯锆酸盐玻璃陶瓷发光特性的研究

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1、北京交通大学硕士学位论文氟氯锆酸盐玻璃陶瓷发光特性的研究姓名：裴之利申请学位级别：硕士专业：光学工程指导教师：王永生20080601ABSTRACTABSTRACT：ElectronTrappingMaterialsstudiedbeforehadthelimitedpracticabilitybecauseoftheirseveralshortcomingsinopticalstorage．Forthesakeofbetterunderstandingtotheopticalpropertiesofelectrontrappingmaterialsandfu

2、rtherimprovementoftheiropticalstoragecapability,propertiesofphoto-stimulatedluminescenceintheBaCl2：Eu2+phosphorandEu—dopedfluorochlorozirconateglassceramicsweremainlyinvestigated．AseriesofEu2+_dopedfluorochlorozirconateglass-ceramicsandthepowderofBaCl2：Eu2+werepreparedbysolidstatere

3、actionmethod．ThecompositionofsampleisanalyzedbyX—raydiffraction．Basedonphoto—luminescence,photo—stimulatedluminescence(PSL)，decaycurvesofphoto—stimulatedluminescenceandtheturbidityoffluorozirconateglass-ceramics，theopticalpropertiesofthesematerialswerestudied．ItisshownfromtheXRDmeas

4、urementsthatglass-ceramicssmallcrystallitesofBaCl2areembeddedinglassmatrixesofEU2+-dopedfluorochlorozirconateandintheBaCl2：EU2+phosphor．ThePSLintheglassceramicsmoreprobablyresultsfromthe5d-4ftransitionofEll2+intheBaCl2crystallites．Studyshowsthatthesematerialshaveevidentphoto．stimula

5、tedluminescenceandCanbeappliedtoopticalstorage．Comparedwiththewell-establishedsingle-crystalBaFBr：Eu2+，theBaCl2：Eu2+phosphorhastherelativelyslowdecaytime．Thetransparentfluorochlorozirconateglass—ceramicsnotonlyhavetherelativelyslowdecaytime，butalsohavethehighspatialresolution．Theann

6、ealedtimeandtheconcentrationofBaCl2offluorochlorozirconateglass—ceramicswerealsoinvestigatedtofindouttheinfectionofphoto—stimulatedluminescenceandthespatialresolution．Studyshowsthatfluorozirconateglass-ceramicshavethelowerspatialresolutionandthehigherPSLwithimprovedtheannealedtimean

7、dtheimprovedconcentrationofBaCl2offluorochlorozirconateglass—ceramics．Theglassannealedfor50minutesat2900Cwillbecomeopaque．whentheconcentrationofBaCl2offluorochlorozirconateglass—ceramicswasuptoacertainextent，theglassisnolongersymmetrical．KEYWORDS：photo-stimulatedluminescence；Electro

8、nTrappingMaterials；