Influence of alkaline earth modifiers on luminescence characteristics of Dy3+ ions in lead zinc antimonate glasses
Journal Title: International Journal of engineering Research and Applications - Year 2018, Vol 8, Issue 6
Abstract
Sb2O3–PbO –ZnO: Dy2O3 glasses mixed with three different modifier oxides viz., BaO, CaO and SrO were prepared. The influence of modifier oxide on the luminescence characteristics of Dy3+ ions has been investigated. Using the intensities of various absorption bands of Dy3+ ions, the Judd-Ofelt parameters 2, 4 and 6 have been evaluate and tabulated. Together with the J‒O parameters and the luminescence spectra, the evaluated various radiative properties like transition probability A, Total radiative probability AT, branching ratio r , the radiative life time r , and the emission cross-section E for various emission levels of Dy3+ ions have been evaluated and reported. The values of these parameters were found to be influenced by modifier oxides. Among the three modifier oxides mixed glasses, the glasses mixed with BaO mixed glasses exhibited the highest luminescence efficiency. The quantitative analysis of results were analyzed in the light of structural modifications taking place in the glass network with the help of IR spectral studies.
Authors and Affiliations
K. Srinivasa Rao, Valluri Ravi Kumar, G. Naga Raju
Keywords
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- EP ID EP394372
- DOI 10.9790/9622-0806030712.
- Views 97
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