期刊
RADIATION MEASUREMENTS
卷 121, 期 -, 页码 86-90出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radmeas.2018.12.013
关键词
Decay kinetics; Energy transfer; Luminescence; Perovskite epitaxial film; Scintillator; (YGd)AlO3:Ce3+
资金
- Czech Science Foundation [GA18-14789S]
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.
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