Luminescence, scintillation, and energy transfer in SiO2–Al2O3–B2O3–Gd2O3:Ce3+,Pr3+ glasses
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Author list: Lertloypanyachai P., Chewpraditkul W., Pattanaboonmee N., Chen D., Babin V., Beitlerova A., Nikl M.
Publisher: Wiley
Publication year: 2017
Journal: physica status solidi (a) – applications and materials science (1862-6300)
Volume number: 214
Issue number: 9
ISSN: 1862-6300
eISSN: 1862-6319
Languages: English-Great Britain (EN-GB)
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Abstract
Ce3+,Pr3+-codoped SiO2–Al2O3–B2O3–Gd2O3 glasses (SABG:Ce,Pr) were prepared by melt quenching under a CO reducing atmosphere. Luminescence properties were investigated under UV and X-ray excitations. A dominant emission band at 430 nm belonging to the Ce3+:5d1 → 4f transition was observed in the photo- and radio-luminescence spectra. The energy transfer occurs from this Ce3+ band toward the 3PJ levels of Pr3+ with an efficiency of up to 24%, followed by the reduction of integrated luminescence intensity with an increasing Pr3+ concentration. This result is attributed to the increase in the reabsorption of Ce3+ luminescence and the non-radiative energy transfer toward the 3PJ levels of Pr3+. The cross-relaxation process within the Pr3+ pairs can further diminish the total luminescence yield at high Pr3+ concentrations. The integral scintillation efficiency and light yield measurements were carried out and compared to the reference Bi4Ge3O12 (BGO) crystal. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Keywords
Pr3+
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