Composition-dependent properties of CexLa0.95-xTb0.05F3 Nanopowders Tailored for X-ray photodynamic therapy and cathodoluminescence imaging
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00641934" target="_blank" >RIV/68378271:_____/25:00641934 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68081731:_____/25:00641934 RIV/68407700:21340/25:00388087
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S1350448725001659" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1350448725001659</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.radmeas.2025.107536" target="_blank" >10.1016/j.radmeas.2025.107536</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Composition-dependent properties of CexLa0.95-xTb0.05F3 Nanopowders Tailored for X-ray photodynamic therapy and cathodoluminescence imaging
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Composition-dependent properties of CexLa0.95-xTb0.05F3 Nanopowders Tailored for X-ray photodynamic therapy and cathodoluminescence imaging
Popis výsledku anglicky
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.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Radiation Measurements
ISSN
1350-4487
e-ISSN
1879-0925
Svazek periodika
189
Číslo periodika v rámci svazku
December
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
8
Strana od-do
107536
Kód UT WoS článku
001596395600001
EID výsledku v databázi Scopus
2-s2.0-105018174170