Ba_2Mg(BO_3)_2:Ce^(3+),Eu^(2+),Na^(+):A potential single-phased two colour borate phosphor for white light-emitting diodes  

作　　者：潘再法 徐娟 朱澄静 刘文涵 王丽丽 

机构地区：[1]College of Chemical Engineering and Materials Science,Zhejiang University of Technology

出　　处：《Journal of Rare Earths》2012年第11期1088-1091,共4页稀土学报（英文版）

基　　金：supported by National Natural Science Foundation of China (10804099,11274299);the Natural Science Foundation of Zhejiang Province(Y4110536);the Key Science and Technology Innovation Team of Zhejiang Province (2009R50002)

摘　　要：A two colour phosphor Ba2Mg（BO3）2：Ce^3＋,Eu^2＋,Na^＋ was synthesized using solid-state reaction method. Luminescence of Ba2Mg（BO3）2：Ce^3＋,Eu^2＋,Na^＋ showed 416 and 618 nm emission bands attributed to Ce^3＋ and Eu^2＋ emission, respectively. Energy transfer occurred from Ce^3＋ to Eu^2＋ through a significant overlap of Eu^2＋ excitation spectrum with Ce^3＋ emission spectum in Ba2Mg（BO3）2. They also showed that under the excitation of UV radiation, bluish or yellowish white light was generated by coupling a broad blue emission band and a red emission band. By combining with green phosphor, Ba2Mg（BO3）：Ce^3＋,Eu^2＋,Na^＋ phosphor showed potential application for white light-emitting diodes （LEDs）.A two colour phosphor Ba2Mg（BO3）2：Ce^3＋,Eu^2＋,Na^＋ was synthesized using solid-state reaction method. Luminescence of Ba2Mg（BO3）2：Ce^3＋,Eu^2＋,Na^＋ showed 416 and 618 nm emission bands attributed to Ce^3＋ and Eu^2＋ emission, respectively. Energy transfer occurred from Ce^3＋ to Eu^2＋ through a significant overlap of Eu^2＋ excitation spectrum with Ce^3＋ emission spectum in Ba2Mg（BO3）2. They also showed that under the excitation of UV radiation, bluish or yellowish white light was generated by coupling a broad blue emission band and a red emission band. By combining with green phosphor, Ba2Mg（BO3）：Ce^3＋,Eu^2＋,Na^＋ phosphor showed potential application for white light-emitting diodes （LEDs）.

关 键 词：Ba2Mg（BO3）2：Ce^3＋ Eu^2＋ Na^＋ luminescence energy transfer single-phased two colour borate phosphor rare earths 

分 类 号：TN312.8[电子电信—物理电子学] TN104.3