Eu^3+,Tb^3+共掺杂的NaGd(WO4)2颜色可调荧光粉的水热合成及发光性质研究  

Hydrothermal Synthesis and Luminescent Properties of Eu^3+,Tb^3+Co-Doped NaGd(WO4)2 Phosphors with Tunable Color

作　　者：翟永清[1] 姜龙太 邓德芮 汪威澳 陈湘匀 吴晗 ZHAI Yongqing;JIANG Longtai;DENG Derui;WANG Weiao;CHEN Xiangyun;WU Han(College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China)

机构地区：[1]河北大学化学与环境科学学院,保定071002

出　　处：《人工晶体学报》2020年第10期1825-1830,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(21804030);河北省自然科学基金(B2020201082)。

摘　　要：在不添加任何模板剂的情况下,采用温和水热法,制备了一系列NaGd0.96-x(WO4)2∶0.04Tb3+,xEu3+(x=0,0.005,0.01,0.02,0.04,0.06,0.08,0.10,0.12,0.14,0.16,0.18)荧光粉。采用X射线粉末衍射仪(XRD)、扫描电子显微镜(SEM)以及荧光分光光度计分别对所得样品的物相结构、形貌粒度及发光性能进行分析表征。结果表明:所合成的样品为NaGd(WO4)2的纯相,属四方晶系白钨矿结构。其形貌为规整的四方盘形,尺寸均一、分散性良好。系列样品均能被近紫外光有效激发,通过改变NaGd(WO4)2中Eu^3+/Tb^3+的掺杂浓度,实现了对荧光粉发光颜色由绿色到红色的全色调控。A series of NaGd0.96-x(WO4)2∶0.04Tb^3+,xEu^3+(x=0,0.005,0.01,0.02,0.04,0.06,0.08,0.10,0.12,0.14,0.16,0.18)phosphors were prepared by a relatively mild hydrothermal method without the addition of any template.The phase structure,morphology and particle size,and luminescence properties of the samples were investigated by X-ray powder diffractometry(XRD),scanning electron microscopy(SEM)and fluorescence spectrophotometry,respectively.The results show that the as-synthesized samples are pure NaGd(WO4)2 with tetragonal scheelite structure,and possess defined square-plate morphology,uniform size distribution and good dispersity.All the samples can be excited effectively by near-ultraviolet light,and the emitting color can be tuned from green to red color by changing the doping concentration of Eu^3+and Tb^3+.

关 键 词：NaGd(WO4)2 Eu^3+ Tb^3+共掺 水热法 近紫外光激发 发光调控 

分 类 号：TQ422[化学工程] O482.31[理学—固体物理]