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Shallow Traps in {\rm YAlO}_{3}:{\rm Ce} Single Crystal Perovskites

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8 Author(s)
Fasoli, M. ; Dept. of Mater. Sci., Univ. of Milano-Bicocca, Milan ; Fontana, Ilaria ; Moretti, F. ; Vedda, A.
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The aim of this work is to investigate the influence of shallow traps on scintillating properties of YAlO3:Ce. Wavelength-resolved thermally stimulated luminescence measurements following X-ray irradiation at 10 K have been performed on both undoped and Ce-doped crystals. Different and composite glow curves and emission spectra were obtained. Following glow peaks analysis of YAlO3:Ce, their room temperature decay time was evaluated to be of the order of 10-4 s. The presence of an athermal tunneling recombination process between traps and Ce3+ ions below 100 K has been evidenced by phosphorescence decays.

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Nuclear Science, IEEE Transactions on  (Volume:55 ,  Issue: 3 )