Spectral analysis of Eu3+:B2O3-Al2O3-MF2 (M = Zn, Ca, Pb) glasses

被引：36

作者：

Azeem, P. Abdul ^{[1
]}

Kalidasan, M. ^{[1
]}

Gopal, K. Rama ^{[2
]}

Reddy, R. R. ^{[2
]}

机构：

[1] VIT Univ, Sch Sci & Humanities, Div Phys, Vellore 632014, Tamil Nadu, India

[2] Sri Krishnadevaraya Univ, Dept Phys, Anantapur 515003, Andhra Pradesh, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 474卷 / 1-2期

关键词：

Amorphous materials; Optical properties; Luminescence; RARE-EARTH IONS; OPTICAL-ABSORPTION; FLUOROBORATE GLASSES; ENERGY-TRANSFER; EU3+ IONS; PHOTOLUMINESCENCE; TB3+; INTENSITIES; PHOSPHATE; EMISSION;

D O I：

10.1016/j.jallcom.2008.06.134

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：

The influence of glass composition on the optical properties of Eu3+-doped borate glasses modified with Zn2+, Ca2+ and Pb2+ cations has been investigated. These glasses have been prepared by melt quenching technique and characterized through optical absorption, photoluminescence and decay times. An intense red luminescence is observed from the D-5(0) emitting level of Eu3+ ions in these glasses. The relative luminescence intensity ratio of D-5(0) -> F-7(2) to D-5(0) -> F-7(1) transitions has been evaluated to estimate the local site symmetry around the Eu3+ ions. Judd-Ofelt parameters have been evaluated from the absorption spectra. These parameters have been used to derive radiative properties such as transition probabilities, branching ratios, radiative lifetimes and peak stimulated emission cross-sections for the D-5(0) -> F-7(1) (J = 0, 1, 2, 3 and 4) transitions. Decay curves of the D-5(0) level of Eu3+ ions in these three glass systems have been measured by monitoring the D-5(0) -> F-7(2) transition at room temperature. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：536 / 540

页数：5

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