Hydrothermal synthesis and luminescent properties of BaMoO_4:Sm~(3+) red phosphor

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摘要 Trivalentsamariumdopedbariummolybdate(BaMoO_4:Sm~(3+))redphosphorwassuccessfullysynthesizedbyhydrothermalmethod.Thecrystalstructure,morphologyandphotoluminescentpropertywerecharacterizedbyX-raydiffraction,fieldenvironmentalscanningelectronmicroscopyandphotoluminescencespectroscopy.TheresultsindicatedthatthesynthesizedBaMoO_4:Sm~(3+)phosphorconsistedofapurephasewithanoctahedralstructure.Themainexcitationpeakswerelocatedat362,404,445and477nm,respectively,andwereobviouslyobserved.Themainemissionpeakswerelocatedat533,566,602and646nm,respectively.Thephosphorsexhibitedaredperformanceat646nm,whichwasappropriatefortheultraviolet-lightemittingdiode(UV-LED)andblueLED.TheluminescentintensityofBaMoO_4:Sm~(3+)increasedwithanincreaseinthedopingamountofSm~(3+).Theluminescentintensityhadtheoptimalvalueforx=0.03.WhenthedopingamountofSm~(3+)wasfurtherincreased,theconcentrationquenchingphenomenonwasobserved.Monovalentlithium(Li+)cationwasusedasachargecompensator.TheluminescenceintensityfirstincreasedwithincreasingLi+dopingconcentration,andthendecreased.TheoptimalcontentofLi+wasabout2%.TheBaMoO_4:Sm~(3+)phosphorpreparedinthisstudycouldactassuperiorredphosphorforwhiteLEDs.
机构地区 不详
出版日期 2016年02月12日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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