4.6 Article

Structural and photoluminescence properties of Dy3+ doped different modifier oxide-based lithium borate glasses

期刊

JOURNAL OF LUMINESCENCE
卷 132, 期 11, 页码 2984-2991

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2012.06.014

关键词

Absorption; J-O Parameters; Photoluminescence; Stimulated emission cross-section; Branching ratio

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资金

  1. UGC

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Structural and photoluminescence properties of Dy3+ doped lithium fluoro-borate glasses with the compositions Li2B4O7-BaF2-NaF-MO (where M = Mg, Ca, Cd and Pb), Li2B4O7-BaF2-NaF-MgO-CaO and Li2B4O7-BaF2-NaF-CdO-PbO have been investigated through XRD, FUR, optical absorption, emission and decay measurements. From the optical absorption spectra. Judd-Ofelt intensity parameters (Omega(lambda), lambda = 2, 4 and 6) have been evaluated and are in turn used to predict radiative properties such as radiative transition probabilities (A(T)), branching ratios (beta(r)) and stimulated emission cross sections (sigma(p)) for all emission levels of Dy3+ ion in different lithium fluoro-borate glass matrices. From the emission spectra. chromaticity color coordinates have been calculated and indicated emission color for all glass matrices. The nature of decay profiles of F-4(9/2) state of Dy3+ in all the glass matrices are analyzed. (C) 2012 Elsevier B.V. All rights reserved.

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