Er3+/Yb3+/Tb3+共掺氟氧锗酸盐玻璃上转化发光性质及机理研究
收稿日期: 2009-12-18
修回日期: 2010-02-05
网络出版日期: 2010-05-12
Characteristics and Mechanism of Up-conversion Luminescence in Er3+/Yb3+/Tb3+ Co-doped Oxyfluorogermanate Glasses
Received date: 2009-12-18
Revised date: 2010-02-05
Online published: 2010-05-12
在980nm激发下，研究了Er3+、Yb3+和Tb3+单掺或共掺氟氧锗酸盐玻璃的上转换发光性质和机理.室温下，观察到了强的绿色和红色上转换发光，其发光中心位于524、546和658nm处，分别对应于Tb3+离子的5D4→7FJ(J=5和0) 和Er3+离子的(2H11/2、4S3/2和4F9/2) →4I15/2跃迁.研究了TbF3、YbF3掺杂浓度以及激光功率对上转换发光强度的影响，讨论了Er3+、Yb3+和Tb3+之间的能量传递和上转换机理.
关键词： 上转换发光; 机理; 氟氧锗酸盐玻璃; Er3+/Yb3+/Tb3+共掺; 能量传递
胡曰博1,2,3， 邱建备2， 周大利1， 杨正文2， 宋志国2 . Er3+/Yb3+/Tb3+共掺氟氧锗酸盐玻璃上转化发光性质及机理研究[J]. 无机材料学报, 2010 , 25(5) : 551 -556 . DOI: 10.3724/SP.J.1077.2010.09878
Up-conversion luminescence properties and energytransfer processes in Er3+,Yb3+ and Tb3+ single doped or co-doped oxyfluorogermanate glasses were studied under 980nm laser excitation. Green and red up-conversion emissions around 524, 546 and 658nm which can be assigned to the Tb3+∶5D4→7FJ (J=5 and 0) and Er3+∶(2H11/2, 4S3/2 and 4F9/2)→4I15/2 transitions, respectively, were strongly observed at room temperature. Up-conversion luminescence intensity depended on the YbF3, TbF3 concentration and excitationpower density. The energy transfer processes among Er3+, Yb3+ and Tb3+, and up-conversion mechanisms were discussed.
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