| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5403388 | Journal of Luminescence | 2007 | 5 Pages |
Abstract
Up-conversion luminescence and energy transfer (ET) processes in Nd3+-Yb3+-Er3+ triply doped TeO2-ZnO-Na2O glasses have been studied under 800Â nm excitation. Intense green up-conversion emissions around 549Â nm, which can be attributed to the Er3+: 4S3/2â4I15/2 transition, are observed in triply doped samples. In contrast, the green emissions are hardly observed in Er3+ singly doped and Er3+-Yb3+ codoped samples under the same condition. Up-conversion luminescence intensity exhibits dependence of Yb2O3-concentration and Nd2O3-concentration. Up-conversion mechanism in the triply doped glasses under 800Â nm pump is discussed by analyzing the ET among Nd3+, Yb3+ and Er3+. And a possible up-conversion mechanism based on sequential ET from Nd3+ to Er3+ through Yb3+ is proposed for green and red up-conversion emission processes.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Longjun Lu, Qiuhua Nie, Tiefeng Xu, Shixun Dai, Xiang Shen, Xianghua Zhang,