Luminescence and energy transfer of white emitting phosphor YAl_3(BO_3)_4:Ce^(3+), Dy^(3+)  

作　　者：周芬 王迪 曹鹤英 李净 宋会玲 李盼来 王志军 张坤 庞立斌 

机构地区：[1]College of Physics Science & Technology, Hebei University [2]Industrial & Commercial College, Hebei University [3]Department of Foreign Language Teaching and Research, Hebei University

出　　处：《Optoelectronics Letters》2015年第2期111-115,共5页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.50902042);the Natural Science Foundation of Hebei Province in China(Nos.A2014201035 and E2014201037);the Education Office Research Foundation of Hebei Province in China(Nos.ZD2014036 and QN2014085)

摘　　要：A white emitting phosphor of YAl33(BO3)4:Ce+,Dy3+is synthesized by a solid state reaction,and its luminescent properties are investigated.Its phase formation is carried out with X-ray powder diffraction analysis,and there is no crystalline phase other than YAl3(BO3)4.YAl3(BO3)4:Ce3+can produce 422 nm blue emission under 367 nm excitation.The emission spectrum of YAl33(BO3)4:Dy+shows several emission peaks under 350 nm excitation,and the peaks locate at485 nm,575 nm and 668 nm,respectively.Emission intensities of Ce3+and Dy3+in YAl3(BO3)4 are influenced by their concentrations,and the concentration quenching effect is observed.Energy transfer from Ce3+to Dy3+in YAl3(BO3)4 is validated and proved to be a resonant type via a quadrupole-quadrupole interaction,and the emission color can be tuned from blue to white by tuning the ratio of Ce3+/Dy3+.Moreover,the critical distance(Rc)of Ce3+to Dy3+in YAl3(BO3)4 is calculated to be 1.904 nm.A white emitting phosphor of YAI3（BOa）4：Ce3＋, Dy3＋is synthesized by a solid state reaction, and its luminescent prop- erties are investigated. Its phase formation is carried out with X-ray powder diffraction analysis, and there is no crys- talline phase other than YAO3（BO3）4. YAI3（BO3）4：Ce3＋ can produce 422 nm blue emission under 367 nm excitation. The emission spectrum of YAI3（BO3）4：Dy3＋ shows several emission peaks under 350 nm excitation, and the peaks locate at 485 nm, 575 nm and 668 nm, respectively. Emission intensities of Ce3＋ and Dy3＋ in YAI3（BO3）4 are influenced by their concentrations, and the concentration quenching effect is observed. Energy transfer from Ce3＋ to Dy3＋ in YAI3（BO3）4 is validated and proved to be a resonant type via a quadrupole-quadrupole interaction, and the emission color can be tuned from blue to white by tuning the ratio of Ce3＋/Dy3＋. Moreover, the critical distance （Re） of Ce3＋ to Dy3＋ in YAI3（BO3）4 is calculated to be 1.904 um.

关 键 词：白色发光 能量转移 X射线粉末衍射分析 四极相互作用 镝 蓝光发射 激发波长 反应合成 

分 类 号：TN104.3[电子电信—物理电子学]