Concentration Dependent Luminescence and Energy Transfer Properties of Samarium Doped LLSZFB Glasses

(E-pub Ahead of Print)

Author(s): Puram Kistaiah* , Gonuguntla Anjaiah , Thammisetty Sasikala .

Journal Name: Current Physical Chemistry

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Abstract:

Background: Recently, great importance has been devoted to borate glass systems doped with rare-earth ions because of their unique peculiar properties in the field of photonics for optical applications.

Objective: The purpose of the present study is to investigate the effect of concentration of Sm3+ ions on the luminescence properties of lead fluoroborate glasses through the energy transfer mechanism.

Materials and Method: Samarium doped lead fluoroborate glasses with chemical composition 20PbF2 .10Li2O .5SrO .5ZnO. (60-x) B2O3. xSm2O3 (where x = 0.1, 0.5, 1.0, 1.5 and 2.0 mol %) were prepared by means of melt quenching method. The concentration dependent luminescence properties were investigated in detail from the optical absorption, photoluminescence and decay analysis. Judd-Ofelt (J-O) theory was applied to analyze the optical absorption spectra. The experimental oscillator strengths of absorption bands have been used to determine the J-O parameters. Using the J-O parameters Ωλ (λ = 2, 4 and 6) and luminescence data several radiative parameters were obtained.

Results: From the luminescence spectra, it was noticed that luminescence quenching starts at higher concentrations of Sm3+ ions (

Keywords: Fluoroborate glass, Melt quenching, Optical absorption, Photoluminescence, Sm3+ ions, Energy transfer

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(E-pub Ahead of Print)
DOI: 10.2174/1877946809666190724152259