Epitaxial growth, photoluminescence and scintillation properties of Gd3+ co-doped YAlO3:Ce3+ films. (February 2019)

• Record Type: Journal Article
• Authors: Rathaiah, M.; Kucera, M.; Pejchal, J.; Beitlerova, A.; Kucerkova, R.; Nikl, M.
• Is Part Of: Radiation measurements. Volume 121(2019:Feb.)
• Page Start: 86
• Page End: 90
• Publication Date: 2019-02
• Subjects: Decay kinetics -- Energy transfer -- Luminescence -- Perovskite epitaxial film -- Scintillator -- (YGd)AlO3:Ce3+; Nuclear emulsions -- Periodicals; Particle tracks (Nuclear physics) -- Periodicals; Thermoluminescence -- Periodicals; Cosmic rays -- Periodicals; Radiation -- Measurement -- Periodicals; Radiometry -- Periodicals; Radiation Monitoring -- Periodicals; Émulsions nucléaires -- Périodiques; Particules (Physique nucléaire) -- Traces -- Périodiques; Thermoluminescence -- Périodiques; Rayonnement cosmique -- Périodiques; Radiométrie -- Périodiques; 539.77
• DOI: 10.1016/j.radmeas.2018.12.013
• Languages: English
• ISSNs: 1350-4487

Abstract

Abstract: In this study, the Gd 3+ -substituted yttrium aluminum perovskite epitaxial films activated by Ce 3+ ions, (YGd)AlO3 :Ce 3+ 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 Ce 3+ emission gradually decreased and the Ce 3+ decays were accelerated. The model of bidirectional non-radiative energy transfer between Gd 3+ and Ce 3+ ions and energy migration over the Gd 3+ sublattice is suggested and the processes responsible for the observed effects are discussed. Highlights: (GdY)AlO3 :Ce 3+ perovskite scintillators were characterized. Bidirectional Gd 3+ -Ce 3+ energy transfer in GdYAP:Ce perovskite was proposed. Gd co-doped YAlO3 :Ce 3+, Gd 3+ perovskite films were prepared by liquid phase epitaxy.