Optimization of the Fabrication of Luminescent Nanocrystalline CeₓLa1-xF₃:Tb³⁺ for XPDT Applications
Year: 2025
Type: article
Abstract: This work presents an investigation into the synthesis, characterization, and luminescence properties of Ce0.5La0.5F3:Tb3+(5%) nanoparticles, synthesized using the sol-gel method with various solvents, including diethylene glycol (DEG), ethylene glycol monomethyl ether (EGME) and polyethylene glycol (PEG). The nanoparticles were subjected to calcination to study the effect of temperature on crystallinity, particle size, and luminescence efficiency. The stability of the nanoparticle suspensions and their potential for biofunctionalization were also evaluated for applications in X-ray induced photodynamic therapy (XPDT). X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses confirmed the size and phase composition of the nanoparticles, with TEM images showing good agreement with dynamic light scattering (DLS) results. Radioluminescence measurements revealed broad Ce3+emission bands and characteristic narrow Tb3+lines and confirmed efficient energy transfer between Ce3+and Tb3+ions. Notably, the sample prepared in EGME and annealed at 250 °C, as well as the sample synthesized in PEG and annealed at 320 °C, demonstrated the best combination of small particle size, enhanced luminescence, and stable suspensions, making them ideal for further biofunctionalization..
Authors: X. Lytvynenko, M. Urbanová, J. Bárta, L. Prouzová Procházková, V. Čuba
Institution: Czech Technical University in Prague
Language: English
Subfield: Radiation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,645
OpenAlex ID: W4409763451