发光学报2017，Vol.38Issue(8)：987-994,8.DOI:10.3788/fgxb20173808.0987
Bi3+或Sm3+掺杂对NaGd(WO4)2∶Eu3+荧光粉结构和发光性质的影响
Influence of Bi3+ or Sm3+ Doping on Structure and Luminescence Properties of NaGd(WO4)2∶Eu3+ Phosphors
摘要
Abstract
A series of red phosphors NaGd0.95-x(WO4)2∶0.05Eu3+,xBi3+(x=0, 0.02, 0.04, 0.06, 0.08)and NaGd0.95-y(WO4)2∶0.05Eu3+,ySm3+(y=0, 0.01, 0.02, 0.03, 0.04)were synthesized via hydrothermal process.The structure, morphology and luminescent properties of the samples were characterized by X-ray diffraction, scanning electron microscope and fluorescence spectrophotometer, respectively.The results indicate that the crystal structure of NaGd(WO4)2 is almost not changed by doping a small amount of ions, and all samples are tetragonal scheelite-type pure phase.The particles are square plate in shape, relatively uniform and well dispersive.With the introduction of Bi3+ or Sm3+, the particle size increases from the original 4 μm to 5 μm and 6 μm, respectively.The series of phosphors can be effectively excited under near-UV (at 394 nm), and the strongest emission peak is located at 614 nm which corresponds to the 5D0→7F2 transition of Eu3+.In addition, doping with an appropriate amount of Bi3+ or Sm3+ can improve the luminescence intensity and red-light purity of NaGd0.95(WO4)2∶0.05Eu3+ phosphors, especially for Sm3+.关键词
NaGd(WO4)2/红色荧光粉/水热法/Bi3+和Sm3+/敏化发光Key words
NaGd(WO4)2/red phosphor/hydrothermal method/Bi3+ and Sm3+/sensitized luminescence分类
数理科学引用本文复制引用
翟永清,赵鑫,杨帅,孙庆琳,邓德芮,胡正磊,丁士文,苗曼红..Bi3+或Sm3+掺杂对NaGd(WO4)2∶Eu3+荧光粉结构和发光性质的影响[J].发光学报,2017,38(8):987-994,8.基金项目
国家自然科学基金(21301046) （21301046）
2016年河北省大学生创新创业训练计划(201610075077) （201610075077）
河北大学研究生创新项目(X201718)资助 Supported by National Natural Science Foundation of China(21301046) （X201718）
Innovation and Entrepreneurship Training Program of Hebei Province(201610075077) （201610075077）
Post-graduate`s Innovation Fund Project of Hebei University(X201718) （X201718）
