Composition-dependent properties of CexLa0.95-xTb0.05F3 Nanopowders Tailored for X-ray photodynamic therapy and cathodoluminescence imaging

Result code in 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>
Alternative codes found
RIV/68081731:_____/25:00641934 RIV/68407700:21340/25:00388087
Result on the web
<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>

Result language
angličtina
Original language name
Composition-dependent properties of CexLa0.95-xTb0.05F3 Nanopowders Tailored for X-ray photodynamic therapy and cathodoluminescence imaging
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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