摘要
采用溶胶-凝胶燃烧法制备了Gd_2(MoO_4)_3∶Sm^(3+),Tb^(3+)荧光粉,采用XRD、SEM和荧光光谱仪对样品的晶体结构、形貌及发光性能进行分析。结果表明:合成了正交晶系β′-Gd_2(MoO_4)_3,平均粒径为1μm左右。在254nm紫外光激发下,随着Sm^(3+)和Tb^(3+)掺杂浓度的变化,荧光粉颜色实现了红色→黄色→绿色的颜色可调,同时可观察到Tb^(3+)到Sm^(3+)的有效能量传递和Tb^(3+)的浓度淬灭现象。
Sm^（3＋）,Tb^（3＋）doped Gd2（MoO43phosphors were prepared by sol-gel combustion method.X-ray diffraction（XRD）,scanning electron microscopy（SEM）and fluorescence spectrum were used to characterize the structure and luminescent properties of samples.XRD and SEM results showed that the samples belonged to orthorhombic phaseβ′-Gd2（MoO4）3,the particle size was about 1μm.Fluorescence spectrum result showed that under exctitation at 254 nm,the luminescence color of Gd2（MoO4）3∶Sm^（3＋）,Tb^（3＋）phosphors can be tuned from red,yellow to green by adjusting the doping concentrations of Sm^（3＋）and Tb^（3＋）.At the same time,a very efficient energy transfer from Tb^（3＋）to Sm^（3＋）and the concentration quenching of Tb^（3＋）can be observed.
出处
《化工新型材料》
CAS
CSCD
北大核心
2016年第3期82-85,共4页
New Chemical Materials
基金
辽宁省教育厅科学技术研究资助项目(L2011063)
