Control of spectroscopic fluorescence parameters of Nd3+ ions as a function of concentration in a SiO2-Na2O-Al2O3-B2O3 glass system

被引：36
|
作者：
Serqueira, E. O. [2 ]
Dantas, N. O. [2 ]
Bell, M. J. V. [1 ]
机构：
[1] Univ Fed Juiz de Fora, Dept Fis, Grp Espect Mat, BR-36036330 Juiz De Fora, MG, Brazil
[2] Univ Fed Uberlandia, Inst Fis, LNMIS, BR-38400902 Uberlandia, MG, Brazil
来源：
CHEMICAL PHYSICS LETTERS | 2011年 / 508卷 / 1-3期
关键词：
RARE-EARTH IONS; DOPED PHOSPHATE-GLASSES; JUDD-OFELT PARAMETERS; QUANTUM DOTS; OPTICAL-ABSORPTION; SILICATE-GLASSES; LOCAL-STRUCTURE; ENERGY-TRANSFER; OXIDE GLASSES; UP-CONVERSION;
D O I：
10.1016/j.cplett.2011.04.034
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Experimental evidence of spectroscopic parameter control was observed in Nd3+ ions embedded in a SiO2-Na2O-Al2O3-B2O3 glass system. The parameters Omega(2,4,6) and others were determined by the Judd-Ofelt theory. It was found that these parameters were strongly dependent on Nd3+ concentration, indicating a ligand field change. This Letter will present and discuss possible mechanisms responsible for changes in the Judd-Ofelt parameters. Furthermore, non-radiative energy transfer mechanisms such as energy migration, cross relaxation and losses from networked phonons and OH radicals, will be proposed to explain the observed decrease in F-4(3/2) -> I-4(11/2) transition lifetime of Nd3+. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：125 / 129
页数：5
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