Improvement of water resistance of long afterglow SrAl2O4： Dy, Eu phosphor by coating with SiO2 film-中国期刊网

摘要 ThelongafterglowSrAl2O4:Dy,Euphosphorisliabletohydrolyzeinwaterwithdeteriorationoftheluminescentproperty.SrAl2O4:Dy,Euphosphorswerethereforeheatedat60-90℃inTEOSsoltoformasurfacegelandthenheat-treatedat400℃toobtainSiO2coatedphosphors.ObservationbyTransmissionElectronMicroscope(TEM)andX-rayphotoelectronspectroscopy(XPS)showsthatathinsilicafilmformsonthesurfaceofthephosphors.Thecoatingprocedurecanbeillustratedbyafour-stepprocessandthetransparentsilicafilmcansuppressthehydrolysisprocess,sothattheluminescentpropertiesofthephosphorsareunimpairedorevenbetter.

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Improvement of water resistance of long afterglow SrAl2O4： Dy, Eu phosphor by coating with SiO2 film

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Improvement of water resistance of long afterglow SrAl2O4： Dy, Eu phosphor by coating with SiO2 film

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