Luminescence properties of tunable red-green emitting phosphor Ba_2Ca（BO_3）_2：Eu~（3＋）,Tb~（3＋）

• Published in: 光电子快报：英文版 2017, Vol.13 (2), p.131-134
• Main Author: 马明毅 宋武睿 冀春延 李美凡 孟庆伟 王志军 庞立斌 刘海燕
• Format: Article
• Language: English
• Subjects: 发光性能; 可调谐; 欧盟; 绿色发光; 绿色荧光; 肺结核; 能量转移
• ISSN: 1673-1905; 1993-5013

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＋）.