摘要
采用共沉淀法制备了Bi3+掺杂的GdVO4:Tm3+荧光粉材料。采用X射线衍射仪(XRD)、扫描电镜(SEM)、荧光光谱仪(PL)对所得荧光粉的晶体结构,颗粒形貌以及发光特性进行了分析。结果表明:Bi3+的掺入不改变GdVO4相的晶体结构,所得的Gd0.99-xVO4:Tm0.013+,Bix3+荧光粉的相结构仍为四方锆型结构。荧光粉体的形貌呈现尺度较均匀的颗粒状,颗粒尺寸约为70 nm。Bi3+的掺入增强了Gd0.99-xVO4:Tm0.013+,Bix3+荧光粉的发光强度,当Bi3+/Tm3+为0.5时,发光强度在波长为476 nm处达到最大值,显示为明亮的篮光。
The Bi3＋-doped GdVO4：Tm3＋ Blue Phosphors were synthesized by co-precipitation method. The crystal structure, the morphology and the luminescence properties of the （Gd, Bi）VO4：Tm3＋ Blue Phosphors were investigated by X-ray Diffractometer （XRD）, Scanning Electron Microscopy （SEM） and Fluorescence Spectrophotometer （PL）. The results show that the crystal structure of the prepared Gd0.99-xVO4：Tmo.013＋, Bix3＋ phosphors is a tetragonal zircon type structure as same as GdVO4：Tm3＋ phosphor. Nevertheless, the crystal structure of GdVOa：Tm3＋ is not changed with Bia＋-doping. The SEM image reveals Gd0.99-xVO4：Tm0.013＋, Bix3＋ phosphor powders are composed of relatively uniform particles and its particle average size is about 70 nm. The photoluminescence intensity of （Gd, Bi） VO4：Tm3＋ phosphor is enhanced by Bi3＋ doping. When the concentration rate of Bi3＋/Tm3＋=0.5, the maximum photoluminescence intensity can be achieved at wavelengths 417 nm and the bright blue luminescence is displayed.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2014年第2期391-394,共4页
Rare Metal Materials and Engineering
基金
四川省科技支撑资助项目(2008GZ0173)
