Relationship between Li/Ce concentration and the luminescence properties of codoped Gd.sub.3./sub.(Ga, Al).sub.5./sub.O.sub.12./sub.:Ce

0536252 - FZÚ 2021 RIV DE eng J - Journal Article
Yoshino, M. - Bartosiewicz, K. - Horiai, T. - Kamada, K. - Yamaji, A. - Shoji, Y. - Yokota, Y. - Kurosawa, S. - Ohashi, Y. - Sato, H. - Toyoda, S. - Kučerková, Romana - Jarý, Vítězslav - Nikl, Martin - Yoshikawa, A.
Relationship between Li/Ce concentration and the luminescence properties of codoped Gd₃(Ga, Al)₅O₁₂:Ce.
Physica Status Solidi B. Roč. 257, č. 8 (2020), s. 1-6, č. článku 1900504. ISSN 0370-1972. E-ISSN 1521-3951
R&D Projects: GA MŠMT(CZ) EF16_019/0000760
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : concentration effects * Gd₃(Ga, Al)₅O₁₂ * Li codoping * scintillators * single crystals
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.710, year: 2020
Method of publishing: Limited access
https://doi.org/10.1002/pssb.201900504

Li+ codoping of Gd3(Ga, Al)5O12:Ce (GGAG:Ce) single crystals induces the acceleration of scintillation decay time. However, its effect on the scintillation properties of GGAG:Ce remains poorly understood. Herein, the relationship between Ce/Li concentration and scintillation properties is investigated. GGAG crystals with a range of Ce and Li concentrations are grown by the Czochralski method and the scintillation decay and light output of GGAG:Ce, Li are measured. The results show comparable or improved performance compared with conventional scintillators. In optical absorption and photoluminescence (PL) measurements, the conversion of the stable Ce3+ to Ce4+ is not observed in a clear manner in GGAG:Ce samples with variable Li concentration. Instead, some defect‐related absorption seems to appear. Temperature dependence of PL decay for samples with variable Ce concentration is also evaluated.
Permanent Link: http://hdl.handle.net/11104/0314064