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https://elib.bsu.by/handle/123456789/305578| Title: | On the Quenching Mechanism of Ce, Tb Luminescence and Scintillation in Compositionally Disordered (Gd, Y, Yb)3Al2Ga3O12 Garnet Ceramics |
| Authors: | Dubov, V. Kuznetsova, D. Kamenskikh, I. Komendo, I. Malashkevich, G. Ramanenka, A. Retivov, V. Talochka, Y. Vasil’ev, A. Korzhik, M. |
| Keywords: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика ЭБ БГУ::ТЕХНИЧЕСКИЕ И ПРИКЛАДНЫЕ НАУКИ. ОТРАСЛИ ЭКОНОМИКИ::Электроника. Радиотехника |
| Issue Date: | 2023 |
| Publisher: | MDPI |
| Citation: | Photonics 2023; 10(6):615 |
| Abstract: | Two series of (Gd, Y, Yb)3Al2Ga3O12 quintuple compounds with a garnet structure and solely doped with Ce and Tb were prepared in the form of ceramics by sintering in oxygen at 1600 °C for two hours and studied for the interaction of activator ions with ytterbium ions entering the matrix. It was shown that the photoluminescence and scintillation of Ce3+ ions are completely suppressed, predominantly by tunneling ionization through the charge transfer state (CTS) of the Ce4+-Yb2+ ions. The photoluminescence of Tb3+ ions is quenched in the presence of ytterbium, but not completely due to the poor resonance conditions of Tb3+ intraconfiguration transitions and the CTS of the single Yb3+ and the CTS of Ce4+-Yb2+ ions. The scintillation in the visible range of both Ce3+- and Tb3+-doped samples is intensely quenched as well, which indicates strong competition from Yb3+ ions to activators in interaction with the Gd substrate |
| URI: | https://elib.bsu.by/handle/123456789/305578 |
| DOI: | 10.3390/photonics10060615 |
| Scopus: | 85163825898 |
| Sponsorship: | The authors at NRC “Kurchatov Institute” and Moscow State University acknowledge support from the Russian Ministry of Science and Education, agreement no. 075-15-2021-1353 dated 12 October 2021. Analytical research was carried out using equipment from the Research Chemical and Analytical Center NRC “Kurchatov Institute” Shared Research Facilities under the project’s financial support by the Russian Federation, represented by The Ministry of Science and Higher Education of the Russian Federation, agreement no. 075-15-2023-370 dd. 22 February 2023. |
| Licence: | info:eu-repo/semantics/openAccess |
| Appears in Collections: | Статьи НИУ «Институт ядерных проблем» |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| photonics-10-00615-v2.pdf | 6,03 MB | Adobe PDF | View/Open |
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