PECULIARITIES OF PREPARATION OF NANOSTRUCTURED CERIUM-DOPED LUTETIUM-ALUMINIUM GARNET POWDERS PREPARED BY SOL-GEL COMBUSTION METHOD

Authors

Eygeniy N. PODDENEZHNY, Sukhoi State Technical University of Gomel, Gomel, BelarusFollow
Ekaterina E. TRUSOVA, Belarusian State Technological University, Minsk, BelarusFollow
Andrei A. BOIKO, Sukhoi State Technical University of Gomel, Gomel, BelarusFollow
Vladimir S. URBANOVICH, State association «Scientific and Practical Center for Materials of National Academy of Sciences of Belarus», Minsk, BelarusFollow

Abstract

The aim of the work is to study a new method of thermochemical synthesis of luminescent powder of lutetium-aluminium garnet activated by cerium ions (Lu₃Al₅O₁₂:Се³⁺) using nitric acid salts of lutetium, aluminium and cerium, and a mixture of acetic acid and polyvinyl alcohol as a propellant. The synthesis process was carried out in a muffle furnace at an initial temperature of 350 ºC under conditions of limited presence of atmospheric air. The average size of the coherent scattering region for Lu₃Al₅O₁₂:Се³⁺ obtained from the combustion reaction is 60 nm. It was found that during the preparation of nanostructured powder in the reaction vessel the temperature sufficient for the synthesis of Lu₃Al₅O₁₂ develops, and the reducing environment arising from the combustion of the organic mixture favours the formation of cerium ions in the tricharged state. The emission spectrum of the obtained LuAG:Ce³⁺ luminophore powders shows a broad band due to the energy transitions of the Ce³⁺ ion in the garnet structure, between 500 and 650 nm under excitation with a wavelength of 450 nm, which corresponds to the green emission colour.

Recommended Citation

PODDENEZHNY, Eygeniy N.; TRUSOVA, Ekaterina E.; BOIKO, Andrei A.; and URBANOVICH, Vladimir S. (2025) "PECULIARITIES OF PREPARATION OF NANOSTRUCTURED CERIUM-DOPED LUTETIUM-ALUMINIUM GARNET POWDERS PREPARED BY SOL-GEL COMBUSTION METHOD," CHEMISTRY AND CHEMICAL ENGINEERING: Vol. 2025: No. 2, Article 4.
DOI: https://doi.org/10.70189/1992-9498.1675
Available at: https://cce.researchcommons.org/journal/vol2025/iss2/4