Epitaxial growth, photoluminescence and scintillation properties of Gd.sup.3+./sup. co-doped YAlO.sub.3./sub.:Ce.sup.3+./sup. films

0509480 - FZÚ 2020 RIV GB eng J - Journal Article
Rathaiah, M. - Kučera, M. - Pejchal, Jan - Beitlerová, Alena - Kučerková, Romana - Nikl, Martin
Epitaxial growth, photoluminescence and scintillation properties of Gd³⁺ co-doped YAlO₃:Ce³⁺ films.
Radiation Measurements. Roč. 121, Feb (2019), s. 86-90. ISSN 1350-4487. E-ISSN 1879-0925
R&D Projects: GA ČR GA18-14789S
Institutional support: RVO:68378271
Keywords : decay kinetics * energy transfer * luminescence * perovskite epitaxial film * scintillator * (YGd)AlO₃:Ce³⁺
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.512, year: 2019
Method of publishing: Limited access
https://doi.org/10.1016/j.radmeas.2018.12.013

In this study, the Gd3+-substituted yttrium aluminum perovskite epitaxial films activated by Ce3+ ions,(YGd)AlO3:Ce3+ with Gd content 0–44%, were prepared by liquid phase epitaxy technique and their optical,luminescence, and scintillation properties were studied. The results showed that films with Gd content below 20% had greater photoluminescence and radioluminescence intensities. For higher Gd concentrations, the Ce3+ emission gradually decreased and the Ce3+ decays were accelerated. The model of bidirectional non-radiative energy transfer between Gd3+ and Ce3+ ions and energy migration over the Gd3+ sublattice is suggested and the processes responsible for the observed effects are discussed.
Permanent Link: http://hdl.handle.net/11104/0300224