Photoluminescence of Dy3+ Ions in Ba3La(BO3)3
来源期刊：JOURNAL OF RARE EARTHS2004年第5期
论文作者：廉世勋 李其华 雷春华 刘利民 曹小妹 彭夷安
Key words：optics; Ca3La(BO3)3; Dy3+; photoluminescence; concentration quenching; rare earths;
Abstract: The photoluminescence of Dy3+ doped and Dy3+, Ce3+ codoped in Ba3La(BO3)3 were studied. The dependence of the charge-to-radius ratio (z/r) for RE3+(RE=La, Ce), the Ce3+, Dy3+ content on the emission intensity and the yellow to blue intensity ratio (Y/B) of Dy3+ were investigated too. The results obtained indicate that Ce3+ can sensitize the luminescence of Dy3+. The optimum concentration of Dy3+ in Ba3La(BO3)3 is xDy=0.06. According to the dependence of the concentration of Dy3+ in Ba3La(BO3)3 under the excitation of 350 nm, it is confirmed that the mechanism of concentration selfquenching of Dy3+ 4F9/2→6H15/2, 6H13/2 transition is electric dipole-quadrupole interaction.
廉世勋1，李其华1，雷春华1，刘利民1，曹小妹1，彭夷安1
(1.College of Chemistry and Chemical Engineering,Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research,Ministry of Education,Hunan Normal University,Changsha,410081,China)
Abstract:The photoluminescence of Dy3+ doped and Dy3+, Ce3+ codoped in Ba3La(BO3)3 were studied. The dependence of the charge-to-radius ratio (z/r) for RE3+(RE=La, Ce), the Ce3+, Dy3+ content on the emission intensity and the yellow to blue intensity ratio (Y/B) of Dy3+ were investigated too. The results obtained indicate that Ce3+ can sensitize the luminescence of Dy3+. The optimum concentration of Dy3+ in Ba3La(BO3)3 is xDy=0.06. According to the dependence of the concentration of Dy3+ in Ba3La(BO3)3 under the excitation of 350 nm, it is confirmed that the mechanism of concentration selfquenching of Dy3+ 4F9/2→6H15/2, 6H13/2 transition is electric dipole-quadrupole interaction.
Key words:optics; Ca3La(BO3)3; Dy3+; photoluminescence; concentration quenching; rare earths;
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