COMPARISON OF LU3AL5O12:CE(ER) BULK AND NANO SINGLE CRYSTALS

1,2,3 JOHN David
Co-authors:
1 VOLF Jakub 1 Bartosiewicz Karol 4 Horiai Takahiko 4,5 Kamada Kei 4,5,6 Yoshikawa Akira 1 REMEŠ Zdeněk 1 Landová Lucie 7 LEDOUX Gilles 7 HOUEL Julien 1,8 PROKHOROV Andrey 8 BURYI Maksym
Institutions:
1 Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic, EU, john@fzu.cz
2 Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, Prague, Czech Republic, EU
3 Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic, EU
4 New Industry Creation Hatchery Center, Tohoku University, 2-1-1 Katahira Aoba-ku, Sendai, Miyagi, Japan
5 C&A Corporation, T-Biz, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi, Japan
6 Institute for Materials Research, Tohoku University, 2-1-1 Katahira Aoba-ku, Sendai, Miyagi, Japan
7 Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon, Villeurbanne, France, EU
8 Institute of Plasma Physics of the Czech Academy of Sciences, Prague, Czech Republic, EU
Conference:
16th International Conference on Nanomaterials - Research & Application, OREA Congress Hotel Brno, Czech Republic, EU, October 16 - 18, 2024
Proceedings:
Proceedings 16th International Conference on Nanomaterials - Research & Application
Pages:
33-40
ISBN:
978-80-88365-24-2
ISSN:
2694-930X
Published:
28th February 2025
Metrics:
43 views / 24 downloads
Abstract

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 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.

Keywords: Lutetium aluminum garnet, Erbium, Cerium, Single crystal, Nanocrystal, Photoluminescence, EPR

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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