Partition, luminescence and energy transfer of Er3+/Yb3+ ions in oxyfluoride glass ceramic containing CaF2 nano-crystals

被引：63

作者：

Chen, Daqin ^{[1
]}

Wang, Yuansheng ^{[1
]}

Ma, En ^{[1
]}

Yu, Yunlong ^{[1
]}

Liu, Feng ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fujian 350002, Peoples R China

来源：

OPTICAL MATERIALS | 2007年 / 29卷 / 12期

基金：

中国国家自然科学基金;

关键词：

oxyfluoride glass ceramics; CaF2; nano-crystals; energy transfer; luminescence; up-conversion;

D O I：

10.1016/j.optmat.2006.09.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A complete spectroscopic investigation of energy transfer processes in oxyfluoride glass ceramics containing CaF2 nano-crystals doped with various amounts of Er3+ and Yb3+ was reported. An enhancement of the 1.53 mu m emission and infrared to visible up-conversion fluorescence was confirmed experimentally due to efficient non-radiative energy transfer from Yb3+ to Er3+ ions concentrated in CaF2 nano-crystals. The efficiency of Yb3+ to Er3+ energy transfer in excess of 85% was obtained for 0.5 mol% Er3+/2.0 mol% Yb3+ co-doped glass ceramic. Using rate equation formulism, the coefficient of Yb3+ to Er 3+ energy transfer was determined to be about 3.5 times higher than that of Er3+ to Yb3+ energy back transfer, which is sufficient to provide high I-4(11/2) population of Er3+ to improve the fluorescence of the co-doped glass ceramics. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1693 / 1699

页数：7

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