Abstract
A set of Bismuth Borotellurite glasses (BiBT) doped with samarium (Sm3+) ions were successfully processed by a conventional melt quenching process and characterized by various well-known techniques such as EDX, absorption measurements, emission, spectral decay measurements. EDX have been used to analyze the structural properties. Physical properties like transmission factor (Toptical), reflection loss (Rloss), metallization criterion (Mcriterion), etc., were evaluated. By correlating the Judd-Ofelt (J-O) intensity parameters with emission spectral data, various radiative parameters were evaluated for the prominent fluorescent levels of Sm3+ ions arising from 4G5/2 to 6HJ (J = 5/2,7/2, 9/2). The emission cross-section, branching ratio, quantum efficiency values evaluated for the prominent emission band 4G5/2 → 6H7/2 observed at 599 nm indicates the suitability of the as prepared glasses for visible reddish-orange luminescent applications. The CIE coordinates evaluated from the emission spectral features were in consonance with the results obtained from the J-O analysis.
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