Spectroscopic Investigation and Optical Properties of Eu3+-Doped Fluorophosphate Glasses

K. Kiran Kumar; P. Manasa; N. Vijaya; Jakrapong Kaewkhao; C.K. Jayasankar

doi:10.4028/www.scientific.net/KEM.675-676.418

Paper Titles

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Luminescence Characteristics of Li₂O₃:Gd₂O₃:B₂O₃:Dy₂O₃ Glasses System
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 675-676Spectroscopic Investigation and Optical Properties...

Spectroscopic Investigation and Optical Properties of Eu³⁺-Doped Fluorophosphate Glasses

Abstract:

Eu³⁺-doped fluorophosphate (PKACaLF: P₂O₅ – K₂O – Al₂O₃ – CaF₂ – LiF) glasses have been prepared by melt quenching technique. The structural and optical properties have been characterized through Raman, absorption, photoluminescence and decay time measurements. The Judd-Ofelt parameters have been obtained from the absorption spectrum and are found to be Ω₂= 5.21 x10^-20cm², Ω₄= 8.11 x10^-20cm² and Ω₆= 1.03 x10^-20cm². These parameters have been used to calculate the radiative properties of PKACaLFEu10 glass. The relative luminescence intensity ratio of ⁵D₀ → ⁷F₂ to ⁵D₀ → ⁷F₁ transition (R(2/1)) has been evaluated and is found to be 3.25 which indicates moderate asymmetric nature around Eu³⁺ ions. The luminescence decay of ⁵D₀level exhibit single exponential nature and the lifetimes (~ 2.50 ms) are found to be almost constant with increasing Eu³⁺ ion concentration. The chromaticity color coordinates (x = 0.63, y = 0.31) are in the reddish orange region. From these results, it is confirmed that the present PKACaLF glasses are useful for the development of optical display devices.

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Key Engineering Materials (Volumes 675-676)

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418-423

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.675-676.418

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Online since:

January 2016

Authors:

K. Kiran Kumar, P. Manasa, N. Vijaya, Jakrapong Kaewkhao, C.K. Jayasankar*

Keywords:

Color Coordinates, Decay Analysis, Fluorophosphate Glasses, Luminescence Properties

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