Luminescence Properties of Ca4GdO(BO3)3:RE (RE=Eu3+,Tb3+) under VUV Excitation
DUAN Cheng-Jun1, LI Wei-Feng1, CHEN Hao-Hong1, YANG Xin-Xin1, ZHAO Jing-Tai1, FU Yi-Bing2, ZHANG Guo-Bin2, QI Ze-Ming2, SHI Zhao-Shu2
1State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050
2National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026
Luminescence Properties of Ca4GdO(BO3)3:RE (RE=Eu3+,Tb3+) under VUV Excitation
1State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050
2National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026
Abstract： We experimentally investigated the VUV excitation luminescence properties of Ca4GdO(BO3)3:RE (RE=Eu3+,Tb3+). Ca4GdO(BO3)3:Eu3+ and Ca4GdO(BO3)3:Tb3+ emitted bright red and green colour light, respectively, under 172nm excitation, resulting from the favorable position of the host absorption band (186nm) and efficient energy transfer from Gd3+ to activators (e.g. Eu3+ or Tb3+) by means of secondary absorption in the Ca4GdO(BO3)3 matrix. The f--d transitions of Eu3+ and Tb3+ in the host lattice are depicted.
2005, Vol. 22 
