Počet záznamů: 1
Correlated EPR and optical study of charge trapping phenomena in tellurite glasses. The role of barium oxide
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SYSNO ASEP 0576494 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Correlated EPR and optical study of charge trapping phenomena in tellurite glasses. The role of barium oxide Tvůrce(i) Hrabovský, J. (CZ)
Buryi, M. (CZ)
Babin, V. (CZ)
Ridzonova, K. (CZ)
Paurová, K. (CZ)
John, David (UJF-V) ORCID, RID, SAICelkový počet autorů 6 Číslo článku 122596 Zdroj.dok. Journal of Non-Crystalline Solids. - : Elsevier - ISSN 0022-3093
Roč. 620, NOV (2023)Poč.str. 8 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova TeO2-ZnO-BaO ; Electron paramagnetic resonance ; Photoluminescence ; Radioluminescence ; Thermoluminescence ; Charge-trapping centers Obor OECD Materials engineering Způsob publikování Omezený přístup Institucionální podpora UJF-V - RVO:61389005 UT WOS 001072019900001 EID SCOPUS 85169797288 DOI https://doi.org/10.1016/j.jnoncrysol.2023.122596 Anotace Tellurite glasses of the compositions TeO2(60%)-ZnO(40%) and TeO2(60%)-ZnO(20%)-BaO(20%) were prepared in the bulk form with following grinding into powders. The samples were X-ray irradiated. The created charge trapping centers were studied in both types of samples using electron paramagnetic resonance (EPR) spectroscopy. The O- defect and two types of F+ centers were discovered. One of the F+ center remained unchanged whereas the other one as well as the O- defect were affected by the presence of BaO. Moreover, photo-, radioand thermoluminescence (PL, RL, TL, respectively) methods were applied as well. The discovered charge trapping centers have been proven to influence luminescence properties as well - improving them in the TeO2(60%)ZnO(40%) and vice versa degrading them in the TeO2(60%)-ZnO(20%)-BaO(20%) glasses. The effect was even stronger in the grinded samples as compared to the bulk ones. The role of the BaO has been disclosed as supporting oxygen leakage from the host. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2024 Elektronická adresa https://doi.org/10.1016/j.jnoncrysol.2023.122596
Počet záznamů: 1