Liu Zijun, Dai Nengli, Luan Huaixun, Sheng Yubang, Peng Jinggang, Jiang Zuowen, Li Haiqing, Yang Luyun, Li Jinyan
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.
Opt Express. 2010 Sep 27;18(20):21138-46. doi: 10.1364/OE.18.021138.
We report on a new kind of green-emitting high silica luminous glass, which is fabricated by sintering of Ce(3+)-Tb(3+) co-doped porous glass. The spectra show that there are energy transfer between Ce(3+) and Tb(3+), and cross-relaxation between (5)D(3) and (5)D(4) energy level of Tb(3+). The energy transfer process can be adjusted by addition of Ca(2+) into the Ce(3+)-Tb(3+) co-doped porous glass, and the transfer rate can be enhanced about four times than that of Ce(3+)-Tb(3+) co-doped porous glass. The role of Ca(2+) has been discussed, and the fluorescence decay curve reveals that the Ca(2+) play an important role in energy transfer.
我们报道了一种新型的绿色发光高硅发光玻璃，它是通过烧结Ce(3+)-Tb(3+)共掺杂多孔玻璃制备而成的。光谱表明Ce(3+)和Tb(3+)之间存在能量转移，以及Tb(3+)的(5)D(3)和(5)D(4)能级之间的交叉弛豫。通过向Ce(3+)-Tb(3+)共掺杂多孔玻璃中添加Ca(2+)可以调节能量转移过程，转移速率比Ce(3+)-Tb(3+)共掺杂多孔玻璃提高了约四倍。讨论了Ca(2+)的作用，荧光衰减曲线表明Ca(2+)在能量转移中起重要作用。
