Comparison of Lu3Al5O12:Ce(Er) bulk and nano single crystals
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00382351" target="_blank" >RIV/68407700:21340/24:00382351 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.confer.cz/nanocon/2024/4979-optical-properties-of-lu3al5o12-ce-er-nanocrystals" target="_blank" >https://www.confer.cz/nanocon/2024/4979-optical-properties-of-lu3al5o12-ce-er-nanocrystals</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.37904/nanocon.2024.4979" target="_blank" >10.37904/nanocon.2024.4979</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Comparison of Lu3Al5O12:Ce(Er) bulk and nano single crystals
Popis výsledku v původním jazyce
Lutetium aluminum garnet (LuAG) is a crystal well known for being extraordinarily useful for building highly efficient laser devices or ionizing radiation detectors. To design the most favourable physical properties, different dopants and synthesis methods are constantly developed, primarily focused on the advantages of single crystals. However, the downscaling of the luminescent materials to nanosize also creates additional benefits of increased surface to volume ratio and thus, the efficiency of luminescence or doping can be improved. Therefore, the aim of this work is to compare the single crystals and nanogarnets under the influence of Ce and Er doping. Optical properties of the garnet single crystals are very well known while the nanocrystals should have been studied first. Synergy of methods like X-ray diffraction (XRD), photoluminescence (PL), photothermal deflection spectroscopies (PDS) were applied to the LuAG:Ce(Er) nanocrystals whereas the electron paramagnetic resonance (EPR) measurements were carried out in both single and nanocrystals. The main conclusion is that cerium enters nanocrystalline lattice becoming Ce4+ compensated by the Cr2+, Fe2+ ions (accidental impurities) whereas it is also Ce3+ in the single crystal. About one order of magnitude larger Er3+ content was observed in the case of nanocrystals as compared to single crystals.
Název v anglickém jazyce
Comparison of Lu3Al5O12:Ce(Er) bulk and nano single crystals
Popis výsledku anglicky
Lutetium aluminum garnet (LuAG) is a crystal well known for being extraordinarily useful for building highly efficient laser devices or ionizing radiation detectors. To design the most favourable physical properties, different dopants and synthesis methods are constantly developed, primarily focused on the advantages of single crystals. However, the downscaling of the luminescent materials to nanosize also creates additional benefits of increased surface to volume ratio and thus, the efficiency of luminescence or doping can be improved. Therefore, the aim of this work is to compare the single crystals and nanogarnets under the influence of Ce and Er doping. Optical properties of the garnet single crystals are very well known while the nanocrystals should have been studied first. Synergy of methods like X-ray diffraction (XRD), photoluminescence (PL), photothermal deflection spectroscopies (PDS) were applied to the LuAG:Ce(Er) nanocrystals whereas the electron paramagnetic resonance (EPR) measurements were carried out in both single and nanocrystals. The main conclusion is that cerium enters nanocrystalline lattice becoming Ce4+ compensated by the Cr2+, Fe2+ ions (accidental impurities) whereas it is also Ce3+ in the single crystal. About one order of magnitude larger Er3+ content was observed in the case of nanocrystals as compared to single crystals.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Návaznosti výsledku
Projekt
—
Návaznosti
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
16th International Conference on Nanomaterials - Research & Application (NANOCON 2024)
ISBN
978-80-88365-20-4
ISSN
2694-930X
e-ISSN
—
Počet stran výsledku
8
Strana od-do
33-40
Název nakladatele
TANGER
Místo vydání
Ostrava
Místo konání akce
Brno
Datum konání akce
16. 10. 2024
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—