کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403388 | 1392758 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Up-conversion luminescence of Er3+/Yb3+/Nd3+-codoped tellurite glasses
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 126, Issue 2, October 2007, Pages 677-681
Journal: Journal of Luminescence - Volume 126, Issue 2, October 2007, Pages 677-681
نویسندگان
Longjun Lu, Qiuhua Nie, Tiefeng Xu, Shixun Dai, Xiang Shen, Xianghua Zhang,