Al^(3+)/Eu^(2+)共掺杂高硅氧玻璃的荧光特性  

Fluorescence Properties of Al^(3+)/Eu^(2+) Co-Doped High Silica Glass

作　　者：龚凡涵[1] 钱奇(指导)[1] 杨中民[1] 张勤远[1] 刘艳春[1,2] 张琪[1] 侯来广 宋武元[1,3] 

机构地区：[1]华南理工大学光通信材料研究所,发光材料与器件国家重点实验室,广东广州510640 [2]广州锐得森特种陶瓷科技有限公司,广东广州510460 [3]广东出入境检验检疫局,广东广州510623

出　　处：《中国激光》2012年第11期75-80,共6页Chinese Journal of Lasers

基　　金：国家863计划(2011AA030203);国家自然科学基金(U0934001);广州市白云区科技项目(2009-sz-19)资助课题

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450nm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。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.

关 键 词：材料 Eu2+离子 Al3+离子 高硅氧玻璃 荧光性质 

分 类 号：TQ171.719[化学工程—玻璃工业]