Ba_(4)Ce_(3)Na_(3)(PO_(4))_(6)F_(2):Ce^(3+)/Eu^(2+)的发光特性及能量传递  

Luminescence property and energy transfer of Ba_(4)Ce_(3)Na_(3)(PO_(4))_(6)F_(2):Ce^(3+),Eu^(2+)

作　　者：梁绍龙 秦晓东 王嘉瑞 郑明杰 李盼来[2] 徐艳梅[1] LIANG Shaolong;QIN Xiaodong;WANG Jiarui;ZHENG Mingjie;LI Panlai;XU Yanmei(Department of Mathematics and Physics,North China Electric Power Unversity,Baoding,Hebei 071003,China;College of Physics Science&Technology,Hebei University,Baoding,Hebei 071002,China)

机构地区：[1]华北电力大学数理系,河北保定071003 [2]河北大学物理科学与技术学院,河北保定071002

出　　处：《光电子.激光》2025年第1期100-106,共7页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(51902080);华北电力大学中央高校基金(2018MS133)资助项目。

摘　　要：为了解决荧光粉混合物之间存在的颜色再吸收和配比调控问题,采用高温固相法合成了一系列Ba_(4-x)Ce_(3)Na_(3)(PO_(4))_(6)F_(2):xEu^(2+)颜色可调荧光粉。在297 nm光激发下,材料呈现双峰发射特征,570 nm黄色发射峰来源于Eu^(2+)的4f^(6)5d^(1)→4f^(7)跃迁发射,而380—470 nm范围内的发射来源于Ce^(3+)的4f^(6)5d^(1)→4f^(7)跃迁。研究发现,随着Eu^(2+)浓度的增大,材料的发光颜色可以由蓝色变为黄色,色坐标由(0.056,0.069)变为(0.303,0.347),结合荧光衰减曲线,证明Ce^(3+)到Eu^(2+)存在着明显的能量传递。In order to solve the drawbacks of color reabsorption and ratio tuning among phosphor mixtures,a series of Ba_(4-x)Ce_(3)Na_(3)(PO_(4))_(6)F_(2):xEu^(2+)color-tunable luminescent materials are synthesized successfully by high-temperature solid-state method.Under the 297 nm excitation,the emission spectra of the phosphor consist of two emission bands,the yellow light with the peak at 570 nm is assigned to the 4f^(6)5d^(1)→4f^(7) transition of Eu^(2+),and the luminescence centers red-shifted from 380 nm to 470 nm is assigned to the transition from 4f^(6)5d^(1) to 4f^(7) of Ce^(3+).With increasing the Eu^(2+)doping concentration,the emission region of phosphor gradually moves from the blue region to the yellow region,and the chromaticity coordinates(CIE)also turn from(0.056,0.069)to(0.303,0.347).Combined with the fluorescence decay curve,it proves that there is an obvious energy transfer from Ce^(3+)to Eu^(2+).

关 键 词：荧光粉 发光 能量传递 Ba_(4)Ce_(3)Na_(3)(PO_(4))6F_(2):Eu^(2+) 

分 类 号：O614[理学—无机化学] O482.31[理学—化学]