Details

Autor(en) / Beteiligte

• Bakovets, V. V.
• Pivovarova, T. D.
• Plyusnin, P. E.
• Dolgovesova, I. P.
• Rakhmanova, M. I.
• Sotnikov, A. V.

Titel

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

Ist Teil von

• Russian journal of general chemistry, 2024, Vol.94 (1), p.138-144

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.