摘要
A series of Eu^(3+) or Tb^(3+) doped Ba_2Ca(BO_3)_2 phosphors were synthesized by a high temperature solid state method, and the luminescence properties are investigated. Ba_2Ca(BO_3)_2:Tb^(3+) can show an obvious green emission, and the peak locates at 551 nm, which corresponds to the 5D34→7F5 transition of Tb^(3+). Ba_2Ca(BO_3)_2:Eu+ can present the characteristic emission of Eu^(3+), and the peak locates at 600 nm, which is ascribed to the 5D70→F2 transition of Eu^(3+). In order to achieve the emission-tunable phosphors, the Eu^(3+)/Tb^(3+) co-doped Ba_2Ca(BO_3)_2 are synthesized. When tuning the Eu^(3+) or Tb^(3+) concentration, Ba_2Ca(BO_3)_2:Eu^(3+), Tb^(3+) can both show the tunable emission, which may be induced by the energy transfer from Tb^(3+) to Eu^(3+).
A series of Eu^（3＋） or Tb^（3＋） doped Ba_2Ca（BO_3）_2 phosphors were synthesized by a high temperature solid state method, and the luminescence properties are investigated. Ba_2Ca（BO_3）_2：Tb^（3＋） can show an obvious green emission, and the peak locates at 551 nm, which corresponds to the 5D34→7F5 transition of Tb^（3＋）. Ba_2Ca（BO_3）_2：Eu＋ can present the characteristic emission of Eu^（3＋）, and the peak locates at 600 nm, which is ascribed to the 5D70→F2 transition of Eu^（3＋）. In order to achieve the emission-tunable phosphors, the Eu^（3＋）/Tb^（3＋） co-doped Ba_2Ca（BO_3）_2 are synthesized. When tuning the Eu^（3＋） or Tb^（3＋） concentration, Ba_2Ca（BO_3）_2：Eu^（3＋）, Tb^（3＋） can both show the tunable emission, which may be induced by the energy transfer from Tb^（3＋） to Eu^（3＋）.
基金
supported by the China Postdoctoral Science Foundation(No.2015M581311)
the College Students Innovation and Entrepreneurship of Hebei University in China(Nos.2014041 and 2015063)
