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

0560840 - FZÚ 2023 RIV NL eng J - Journal Article
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
R&D Projects: GA ČR GA18-14789S
Institutional support: RVO:68378271 ; RVO:68081731
Keywords : scintillator * luminescence * YAlO₃:Ce * Mg co-doping * perovskite * liquid phase epitaxy
OECD category: Condensed matter physics (including formerly solid state physics, supercond.); Condensed matter physics (including formerly solid state physics, supercond.) (UPT-D)
Impact factor: 3.9, year: 2022
Method of publishing: Limited access
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.
Permanent Link: https://hdl.handle.net/11104/0333619