Exploration of Photoluminescence, Colorimetric, and Decay Performance of Sm-activated CaWO 4 Ceramic

This paper represents structure, photoluminescence, and colorimetric investigations of Sm-activated CaWO ceramic made with the help of a solid-state reaction process. Structures of the ceramics are examined through X-ray diffraction spectroscopy. It indicates that these materials have a tetragonal s...

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Bibliographic Details
Published in:Journal of fluorescence 2024-03
Main Authors: Paikaray, R, Badapanda, T, Sahoo, S, Mohapatra, H
Format: Article
Language:English
Online Access:Get full text
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Summary:This paper represents structure, photoluminescence, and colorimetric investigations of Sm-activated CaWO ceramic made with the help of a solid-state reaction process. Structures of the ceramics are examined through X-ray diffraction spectroscopy. It indicates that these materials have a tetragonal structure and I4 /a space group without having any other secondary phase. Energy band gaps are increased with the higher concentrations of Sm dopants. Photoluminescence analyses show that concentration quenching is found at x = 0.02 Sm incorporated CaWO . The critical distance of energy transfer is obtained as about 20 Å. Q-value is observed approximately equal to 6 which denotes that dipole-dipole interactions occur in the materials that create the critical energy transfer distance in them. Chromaticity values are described in that the ceramics emit orange-red color as well as excellent colorimetric parameters. Quantum efficiency of x = 0.02 Sm composition in CaWO is measured under 405 nm EX wavelength. Photoluminescence decay behaviors are observed and average lifetime values are evaluated.
ISSN:1573-4994