Photoluminescence properties of a novel phosphor, Na3La9O3(BO3)8:RE3+(RE=Eu,Tb)
Photoluminescence properties of a novel phosphor, Na3La9O3(BO3)8:RE3+(RE=Eu,Tb)
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DOI：
10.1016/j.jssc.2007.03.027
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发表时间：
2007-05
影响因子：
3.3
通讯作者：
Xiao-Dan Bai;Guochun Zhang;P. Fu
中科院分区：
文献类型：
--
作者：
Xiao-Dan Bai;Guochun Zhang;P. Fu
采用固相反应法制备了新型氧硼酸盐荧光粉Na_3La_9O_3(BO_3)_8：Eu(NLBO：Eu)和Na_3La_9O(BO)_8：Tb(NLBO：Tb)。研究了其在紫外光激发下的光致发光特性。对应于电偶极跃迁5D0→7F2的Eu3+的主要发射位于613 nm，而属于5D4→7F5跃迁的NLBO：Tb的亮绿色发光位于544 nm。发光强度的浓度依赖关系表明，Eu和Tb的最佳掺杂浓度分别为30%和10%。
The new oxyborate phosphors, Na3La9O3(BO3)8:Eu3+(NLBO:Eu) and Na3La9O3(BO3)8:Tb3+(NLBO:Tb) were prepared by solid-state reactions. The photoluminescence characteristics under UV excitation were investigated. The dominated emission of Eu3+corresponding to the electric dipole transition5D0→7F2is located at 613nm and bright green luminescence of NLBO:Tb attributed to the transition5D4→7F5is centered at 544nm. The concentration dependence of the emission intensity showed that the optimum doping concentration of Eu and Tb is 30% and 10%, respectively.