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Luminescence of Tb 3+ ‐doped oxide glasses with high Gd 2 O 3 concentration under UV and X‐ray excitation
Author(s) -
Chewpraditkul Weerapong,
Sheng Qiuchun,
Chen Danping,
Beitlerova Alena,
Nikl Martin
Publication year - 2012
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201228393
Subject(s) - luminescence , terbium , doping , analytical chemistry (journal) , materials science , excitation , ion , oxide , scintillation , crystal (programming language) , quenching (fluorescence) , chemistry , fluorescence , optics , physics , optoelectronics , organic chemistry , chromatography , quantum mechanics , detector , computer science , metallurgy , programming language
This report presents the luminescence properties of Tb 3+ ‐doped oxide glasses with high Gd 2 O 3 (25 mol%) concentration under UV and X‐ray excitation. The intense green 5 D 4 → 7 F J luminescence is observed with strong luminescence quenching of the 5 D 3 level due to cross‐relaxation process. Energy transfer from Gd 3+ to Tb 3+ ions is confirmed by both luminescence spectra and decay measurements. The integral scintillation efficiency obtained for the 0.5 wt% Tb 3+ ‐doped glass under X‐ray excitation is of about 40% of that of the reference Bi 4 Ge 3 O 12 crystal.
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