Luminescence Properties of Ca4GdO(BO3)3:RE (RE=Eu3+,Tb3+) under VUV Excitation
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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.
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DUAN Cheng-Jun, LI Wei-Feng, CHEN Hao-Hong, YANG Xin-Xin, ZHAO Jing-Tai, FU Yi-Bing, ZHANG Guo-Bin, QI Ze-Ming, SHI Zhao-Shu. Luminescence Properties of Ca4GdO(BO3)3:RE (RE=Eu3+,Tb3+) under VUV Excitation[J]. Chin. Phys. Lett., 2005, 22(3): 711-714.
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DUAN Cheng-Jun, LI Wei-Feng, CHEN Hao-Hong, YANG Xin-Xin, ZHAO Jing-Tai, FU Yi-Bing, ZHANG Guo-Bin, QI Ze-Ming, SHI Zhao-Shu. Luminescence Properties of Ca4GdO(BO3)3:RE (RE=Eu3+,Tb3+) under VUV Excitation[J]. Chin. Phys. Lett., 2005, 22(3): 711-714.
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DUAN Cheng-Jun, LI Wei-Feng, CHEN Hao-Hong, YANG Xin-Xin, ZHAO Jing-Tai, FU Yi-Bing, ZHANG Guo-Bin, QI Ze-Ming, SHI Zhao-Shu. Luminescence Properties of Ca4GdO(BO3)3:RE (RE=Eu3+,Tb3+) under VUV Excitation[J]. Chin. Phys. Lett., 2005, 22(3): 711-714.
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DUAN Cheng-Jun, LI Wei-Feng, CHEN Hao-Hong, YANG Xin-Xin, ZHAO Jing-Tai, FU Yi-Bing, ZHANG Guo-Bin, QI Ze-Ming, SHI Zhao-Shu. Luminescence Properties of Ca4GdO(BO3)3:RE (RE=Eu3+,Tb3+) under VUV Excitation[J]. Chin. Phys. Lett., 2005, 22(3): 711-714.
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