Informace o publikaci
Composition-dependent properties of CexLa0.95-xTb0.05F3 Nanopowders Tailored for X-ray photodynamic therapy and cathodoluminescence imaging
| Autoři | |
|---|---|
| Rok publikování | 2025 |
| Druh | Recenzovaný odborný článek |
| Časopis / Zdroj | RADIATION MEASUREMENTS |
| Citace | |
| www | https://doi.org/10.1016/j.radmeas.2025.107536 |
| Doi | https://doi.org/10.1016/j.radmeas.2025.107536 |
| Klíčová slova | Bioimaging; Cathodoluminescence; Lanthanum fluoride; Scintillator; Sol-gel; XPDT |
| Popis | This study investigates the synthesis and luminescence behavior of CexLa0.95-xTb0.05F3 nanoparticles with varying Ce3+ content. The materials were prepared via sol-gel chemical route and thermally annealed to improve crystallinity and reduce defects. Phase composition and structural parameters were examined by X-ray diffraction (XRD), while elemental composition was determined by X-ray fluorescence (XRF). Cathodoluminescence (CL) intensity mapping was used to evaluate emission uniformity and monitor the degradation of luminescence under electron beam exposure. Photoluminescence (PL) and radioluminescence (RL) spectroscopy confirmed energy transfer from Ce3+ to Tb3+ ions. Luminescence intensities were found to depend strongly on both Ce content and thermal treatment. Based on our measurements, a suitable Ce3+ concentration was identified. The results contribute to the understanding of defect-related quenching mechanisms and are relevant for the design of rare-earth-based luminescent nanomaterials for biomedical applications. |