Mg^(2+)、Sr^(2+)离子掺杂对Ca_2Li_2BiV_3O_(12):Eu^(3+)发光性能的影响

Effect of Mg^(2+),Sr^(2+) Ions Doping on the Luminescent Properties of Ca_2Li_2BiV_3O_(12):Eu^(3+)

采用高温固相法合成了Mg2+、Sr2+离子掺杂新型Ca2Li2BiV3 O12:Eu3+红色荧光粉体材料,研究了保温时间对Ca2 Li2 BiV3 O12:Eu3+荧光粉的影响。使用X射线衍射仪对合成样品进行物相分析,利用荧光分光光度计进行光谱分析,测试了样品的荧光光谱。样品表现为Eu3+离子的特征发射,发光强度随着保温时间的增加而逐渐增强。同时研究了Mg2+、Sr2+离子掺杂对合成荧光粉光谱对合成样品的发光性能的影响,本研究发现Mg2+离子掺杂后样品发光效果明显强于Sr2+离子掺杂后样品的发光效果。

Ca2Li2BiV3O12：Eu3＋ phosphors doped with Mg2＋and Sr2＋ were fabricated by the solid-state reaction for potential application as red phosphors for solid state lighting and characterized by X-ray diffraction（XRD） and fluorescence spectrophotometer.The holding time were also studied.Results showed that holding time had a minor effect on the phase composition but improved the luminescence intensity of samples.The phosphors exhibited a broad charge transfer excitation ranging from 200 nm to 500 nm and representative emission of Eu3＋ ions,which was suitable for InGaN LEDs.The luminescent properties of Ca2Li2BiV3O12：Eu3＋ doped with Mg2＋ ions was better than the phosphor′s doped with Sr2＋ ions.