中国激光, 2012, 39 (11): 1106002, 网络出版: 2012-09-26
Al3+/Eu2+共掺杂高硅氧玻璃的荧光特性
Fluorescence Properties of Al3+/Eu2+ Co-Doped High Silica Glass
摘要
由纳米多孔玻璃制备了Al3+/Eu2+共掺杂的高硅氧玻璃,并研究了在纳米多孔玻璃基质中共掺杂Al3+离子对Eu2+离子450 nm处蓝色荧光强度和荧光峰位的影响。结果表明,共掺杂Al3+离子可分散多孔玻璃中丛聚的Eu2+离子,加之Al2O3较低的声子能量,使Eu2+离子的蓝色荧光发射显著增强;并且由于共掺杂的Al3+降低了Eu2+离子5d轨道劈裂幅度,随着Al3+离子含量的增加,Eu2+离子荧光峰蓝移。
Abstract
Al3+/Eu2+ co-doped high silica glass is obtained by sintering porous glass impregnated in Al3+ and Eu2+ ion-containing solutions. Effects of different Al3+ concentrations on the fluorescence intensity and the emission peak of Eu2+ ions in high silica glass under ultraviolet (UV) excitation are investigated. The results show that, with the properly increased concentrations of Al3+, a remarkable increase in the flourescence intensity of Eu2+ ions centered at 450 nm under UV excitation can be observed because of both the action of Al3+ ions dispersing Eu2+ ions in the high silica glass matrix and the lower phonon energy of Al2O3. Meanwhile, since Al3+ codopant decreases the splitting extent of 5d energy band of Eu2+ ion in high silica glass, an obvious blue shift of the emission peak of Eu2+ ions can be observed with increasing Al3+ content.
龚凡涵, 钱奇, 杨中民, 张勤远, 刘艳春, 张琪, 侯来广, 宋武元. Al3+/Eu2+共掺杂高硅氧玻璃的荧光特性[J]. 中国激光, 2012, 39(11): 1106002. Gong Fanhan, Qian Qi, Yang Zhongmin, Zhang Qinyuan, Liu Yanchun, Zhang Qi, Hou Laiguang, Song Wuyuan. Fluorescence Properties of Al3+/Eu2+ Co-Doped High Silica Glass[J]. Chinese Journal of Lasers, 2012, 39(11): 1106002.