Distribution of Tb3+ and Eu3+ Photoluminescence Activator Ions in the C-Ln2O3 Cationic Sublattice

The samples of the C -Y 2 O 3 compounds doped with photoluminescence activators Tb 3+ and Eu 3+ with the concentration of 3 and 3.5 mol %, respectively, have been synthesized via the sol-gel method and annealed at 800 and 1200°C. Investigation of the luminescence spectra has revealed that, in contra...

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Bibliographic Details
Published in:Russian journal of general chemistry 2024, Vol.94 (1), p.138-144
Main Authors: Bakovets, V. V., Pivovarova, T. D., Plyusnin, P. E., Dolgovesova, I. P., Rakhmanova, M. I., Sotnikov, A. V.
Format: Article
Language:English
Subjects:
Annealing
Cations
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Europium
Far infrared radiation
Gadolinium oxides
Molecular structure
Photoluminescence
Sol-gel processes
Yttrium oxide
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Summary:The samples of the C -Y 2 O 3 compounds doped with photoluminescence activators Tb 3+ and Eu 3+ with the concentration of 3 and 3.5 mol %, respectively, have been synthesized via the sol-gel method and annealed at 800 and 1200°C. Investigation of the luminescence spectra has revealed that, in contrast to the C -Gd 2 O 3 matrix, in the case of C -Y 2 O 3 the increase in the annealing temperature leads to the change of the intensity of the emission bands (doublets at 483–492 and 542–550 nm for Tb 3+ ; 595 and 612 nm for Eu 3+ ), their ratios being almost unchanged. This fact indicates that the sample crystallinity is increased with the increase in the annealing temperature, but no redistribution of Tb 3+ and Eu 3+ cations in the cationic C 3i and C 2 sublattices of the matrix occurs. Far-infrared spectroscopy data has shown that the molecular structure remains unchanged as well.
ISSN:1070-3632
1608-3350
DOI:10.1134/S1070363224010134