简介：Thenear-ultraviolet(n-UV)excitedblue-emittingSr2MgSi2O7:Eu2+phosphorsareusedforfluorescencelampandtricolorwhiteLEDs.Theeffectofnitrogen-dopedonthestructureofthehostandtheenhancementofphotoluminescenceisexperimentallyinvestigated.Theresultsshowthatastheamountofnitrogen-dopedvariesfrom0to0.6(at.),theluminousintensityisfoundtobeincreasedto169%,andthepartialreplacementofObyNresultsinachangeofthecrystalfieldbymodifyingthesymmetryofthecrystalstructure.Asaresult,withthenitrogen-dopedinsmallamount,theluminousintensity,chromaticitycoordinatesandthecolorpuritycanbeadjustedtoadesiredvalueintheapplications.
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