Abstract
The samples were prepared and characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), optical absorption, photoluminescence (PL), and decay time measurements on borate-based glasses with compositions of (60-Y) B2O3 + 20 CaO + 20 NaF + Y Dy2O3 (Y = 0.2, 0.4, 0.6, 0.8, and 1.0%). Using the JO theory, the Judd–Ofelt (JO) intensity parameters (Ωλ, λ = 2, 4, and 6) for BCNFDy glasses were computed. The emission bands have been used to determine the chromaticity color coordinates (x, y), yellow to blue (Y/B) intensity ratios, stimulated emission cross-sections (σ(λp)), effective band widths (Δλeff), and others. By observing the strong 4F9/2 → 6H15/2 transition (486 nm), the decays from the Dy3+ ions 4F9/2 level have been calculated. Due to the quenching process, it is discovered that the experimental lifetimes (τexp) shorten as the quantity of Dy3+ ions increases. At lesser concentrations, the lifetime curves are absolutely single exponential and they step by step change to non-exponential at larger Dy3+ ion concentrations. A dipole–dipole type of energy transmission between the donor and acceptor is shown by how well the Inokuti–Hirayama (IH) model matches the non-exponential decay time curves for S = 6. The results obtained point to the usefulness of the glasses for possible future applications in w-LED technology.
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SB, APL, and SNR contributed to Conceptualization. SS, CRK, and SNR contributed to Methodology. SS, KNK, and APL contributed to Formal analysis and investigation. SNR contributed to Writing and original draft preparation. SS and KNK contributed to Writing, reviewing, and editing of the manuscript. SB, CRK, and SNR contributed to Resources. SNR contributed to Supervision.
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Rasool, S.N., Naveen Kumar, K., Lingaswamy, A.P. et al. Spectroscopic investigation on Dy3+ ions in borate glasses for photonic applications. J Mater Sci: Mater Electron 34, 1695 (2023). https://doi.org/10.1007/s10854-023-11096-0
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DOI: https://doi.org/10.1007/s10854-023-11096-0