燃烧合成纳米Y_2O_2S:Eu^(3+),Mg^(2+),Ti^(4+)红色长余辉发光材料  

Combustion synthesis of Nanocrystalline Y_2O_2S:Eu^(3+),Mg^(2+),Ti^(4+) red long afterglow phosphor

作　　者：李向果[1] 梁振华[2] 彭桂花[2] 

机构地区：[1]河南质量工程职业学院食品化工系,河南平顶山467000 [2]广西师范大学化学化工学院,广西桂林541004

出　　处：《韶关学院学报》2012年第8期56-58,共3页Journal of Shaoguan University

摘　　要：用燃烧法成功合成了纳米Y2O2S:Eu3+,Mg2+,Ti4+红色长余辉发光材料,采用X射线粉末衍射仪(XRD)、扫描电镜(SEM)、荧光光谱仪(PL)对样品进行了物相组成、显微形貌、激发发射光谱等进行了表征.样品的主要组成为Y2O2S;呈厚度为40~70 nm,直径为100~200 nm的纳米片;在626 nm和617 nm处有强烈的红色发射.与固相法比较,激发光谱略有蓝移.NanocrystallineY202S： Eu3＋, Mg2＋, Ti4＋ red long afterglow phosphor was successfully fabricated by combustion synthesis. The phase composition, morphology and luminescence properties were investigated by X- ray diffraction （XRD）, scanning electron microscopy （SEM） and photolumineseence （PL） spectra. The morphology of the sample was circular nanosheets with thickness in range of 40-70 nm and diameter in range of 100~200 nm. The Y202S： Eu3＋, Mg2＋, Ti4＋exhibited strong red emission at 626 nm and 617 nm. Compared Y202S： Eu3＋, Mg2＋, Ti4＋ material, the excitation peak of nanocrystalline phosphor showed apparent excitation spectrum. with the bulk blue-shift in

关 键 词：发光材料 红色长余辉 燃烧法 硫氧化钇 

分 类 号：O482.31[理学—固体物理]