Scintillation properties of YAlO.sub.3./sub.:Ce perovskite co-doped by Mg.sup.2+./sup. ions

0560840 - FZÚ 2023 RIV NL eng J - Článek v odborném periodiku
Kučera, M. - Rathaiah, M. - Nikl, Martin - Beitlerová, Alena - Lalinský, Ondřej
Scintillation properties of YAlO₃:Ce perovskite co-doped by Mg²⁺ ions.
Optical Materials. Roč. 132, Oct (2022), č. článku 112779. ISSN 0925-3467. E-ISSN 1873-1252
Grant CEP: GA ČR GA18-14789S
Institucionální podpora: RVO:68378271 ; RVO:68081731
Klíčová slova: scintillator * luminescence * YAlO₃:Ce * Mg co-doping * perovskite * liquid phase epitaxy
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.); Condensed matter physics (including formerly solid state physics, supercond.) (UPT-D)
Impakt faktor: 3.9, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.optmat.2022.112779

The effect of Mg2+ co-doping on scintillation, luminescence, and optical properties of YAlO3:Ce perovskite was studied. A set of single-crystalline films with cerium content of 0.4% and various Mg concentrations ranging from 0 to 0.4% was grown by the liquid phase epitaxy. At increasing Mg content, the scintillation decays were gradually accelerated from 23 ns to less than 4 ns, however, at the expense of the light yield. At high Mg concentrations, the overlap of the 5d-4f(Ce3+) emission and charge-transfer absorption 2p(O2− )-4f(Ce4+) in the ultraviolet range became large and degraded scintillation properties. The low afterglow signal and independence of the light yield on the shaping time confirmed the low intensity of the delayed emission in the studied samples.
Trvalý link: https://hdl.handle.net/11104/0333619