Nd^(3+)对红色荧光粉MgSiO_3∶Mn^(2+),Nd^(3+)发光性能的影响  

Preparation and Photoluminescence of Red Long Afterglow Phosphor: MgSiO_3∶ Mn^(2+),Nd^(3+)

作　　者：朱亚楠[1] 闫彦红[1] 葛明桥[1] 

机构地区：[1]江南大学纺织服装学院,江苏无锡214122

出　　处：《稀土》2013年第1期11-15,共5页Chinese Rare Earths

基　　金：国家自然科学基金资助项目(21171074/B010201);江苏省2012年普通高校研究生科研创新计划项目(CXLX12-0727)

摘　　要：采用高温固相法制备长余辉发光材料MgSiO3∶Mn2+,Nd3+。借助X射线粉末衍射、激发光谱、发射光谱和余辉衰减曲线对样品进行表征,研究Nd3+对这种红色荧光粉发光性能的影响。结果表明,Nd3+的掺入没有引起样品的晶体结构的变化,但对光谱强度和余辉性能有着显著影响,通过比较单掺Mn2+、单掺Nd3+、双掺Mn2+,Nd3+体系的热释光曲线,揭示了双掺体系中Nd3+的陷阱作用。双掺样品中存在Nd3+向Mn2+能量传递,Nd3+的最佳掺杂量为4%。Long afterglow phosphor MgSiO3 ： Mn^2＋ , Nd^3＋ was prepared by solid - state reaction. The luminescent properties of the samples were characterized by XRD, excitation and emission spectra and afterglow light curves. The results show that the content of Nd^3＋ does not obviously affect the crystal structure, but influences the emission intensity and afterglow properties of the sample obviously. By comparing the thermo - luminescence of single - doped and co - doped samples, Nd^3＋ trap was revealed. In co -doped samples there exists energy transformation from Nd^3＋ to Mn^2＋. When Nd^3＋ content was 4%, the initial brightness and afterglow properties were the best.

关 键 词：MgSiO3∶Mn2+ Nd3+ 亮度 陷阱 

分 类 号：O614.33[理学—无机化学] O482.31[理学—化学]