Influence of Sm3+ ion concentration on the photoluminescence behavior of antimony lead oxy fluoro borate glasses. (February 2022) - Amer, D.
Highlights: Antimony Lead Oxy Fluoro Borate with Sm2 O3 glasses were synthesized by melt quenching method. J-O (Ωλ ) parameters for 1.0 mol % of Sm 3+ doped samples were analyzed. Lifetime of 4 G5/2 shifted from exponential to non-exponential with increases in the concentrations of Sm 3+ ions. The CIE chromaticity measured for all the Sm 3+ ion doped titled glasses are observed to be falling in reddish orange region Abstract: The synthesis and characterization of a new glass series with the chemical composition 70B2 O3 –20PbO-5Sb2 O3 –(5-X) NaF-XSm2 O3 where X is 0.1, 0.5, 1.0, 1.5, 2.0 and 2.5 were discussed in detailed in this paper. The glasses were made by using the traditional melt quenching process, and their spectroscopic behavior was studied to understand their utility in the development of lasers, light-emitting diodes (LEDs) and optical devices. Fourier-Transform Infrared (FT-IR) spectroscopy and EDX studies have been conducted to identify the functional groups and elemental composition present in the as prepared undoped glass. Optical and luminescent behaviors of the as prepared glasses were studies using absorption, photoluminescence (PL) excitation, PL emission and PL decay spectral features. The strengths of absorption bands called oscillator strength were calculated by using absorption spectral data and subsequently subjected to Judd-Ofelt (J-O) analysis to estimation various radiative properties like radiative transition probability (AR ), total radiative transition probabilities (AT ), branching Ratios (βR ) and the radiative lifetimes (τ R ) for the prominent fluorescent levels of the Sm 3+ ions in the titled glasses. The experimental lifetimes (τexp ) measured from the PL decay curves are correlated with τ R to estimate quantum efficiency (ƞ) of the as prepared glasses. The quantum efficiency, emission cross sections and other radiative parameters along with the CIE coordinates estimated for the Sm 3+ ions doped titled glasses finally allows us to contemplate its potentiality for the fabrication of optoelectronic devices in visible reddish-orange region. Graphical abstract: Image, graphical abstract FT-IR spectrum of un-doped (Host Glass) BPbSbNaF glass