Gd^(3+)掺杂对NaY(MoO_4)_2∶Eu^(3+)荧光粉发光性能影响的研究  

Influence of Gd^(3+) Doping on Properties of NaY(MoO_4)_2∶Eu^(3+) Phosphors

作　　者：刘伟[1] 李西林[1] 刘娟[1] 韩厦[1] 闫景辉[1] 康振辉[2] 连洪洲[3] 

机构地区：[1]长春理工大学化学与环境工程学院,长春130022 [2]苏州大学功能纳米与软物质(材料)研究院,苏州215123 [3]中国科学院长春应用化学研究所稀土资源利用国家重点实验室,长春130022

出　　处：《化学学报》2011年第13期1565-1569,共5页Acta Chimica Sinica

基　　金：吉林省教育厅重大科技支撑项目(No.2009JYT19)资助项目

摘　　要：采用微乳液-水热法制备了NaY(MoO4)2∶Eu3+和Na(Y,Gd)(MoO4)2∶Eu3+荧光粉.利用X射线衍射(XRD)、扫描电镜(SEM)和荧光光谱手段对样品进行了表征.所制样品的X射线衍射峰与标准卡片PDF#82-2369基本吻合.SEM图谱显示所制备的纳米粒子直径为0.5～0.8μm.激发-发射光谱显示,在Eu掺杂浓度为4%时NaY(MoO4)2∶Eu3+发光强度最高;当物质的量比Y∶Gd=0.5∶0.5时,Na(Y,Gd)(MoO4)2∶4%Eu3+的发光强度达到最大,并且在276,395和465 nm波长光激发下Na(Y0.48,Gd0.48)(MoO4)2∶4%Eu3+分别发出淡粉、黄色和橙红色光,可用于白光LED荧光材料.Eu3＋-doped NaY（MoO4）2 and Na（Y,Gd）（MoO4）2 phosphors were prepared via microemulsion-hydrothermal method.X-ray diffraction（XRD）,scanning electron microscopy（SEM） and fluorescence spectroscopy were used to characterize the samples.The XRD of as-prepared samples were in agreement with the PDF # 82-2369 of NaY（MoO4）2.SEM images showed that the as-prepared particles had a diameter size ranging from 0.5 to 0.8 μm.The critical activator molar concentration（Eu3＋） in NaY（MoO4）2∶Eu3＋ was 4%,and the luminescent intensity of Na（Y,Gd）（MoO4）2∶4%Eu3＋was maximum when Y∶Gd molar ratio at 0.5∶0.5.Excited by 276,395 and 465 nm,Na（Y0.48,Gd0.48）（MoO4）2∶4%Eu3＋exhibited pale pink,yellow and orange-red respectively.The sample of Na（Y,Gd）（MoO4）2∶Eu3＋could become a valuable lu-minescent material for white LED.

关 键 词：微乳液-水热法 钼酸盐 白光二极管 荧光光谱 

分 类 号：TQ422[化学工程]