In:
physica status solidi (b), Wiley, Vol. 257, No. 8 ( 2020-08)
Abstract:
Li + codoping of Gd 3 (Ga, Al) 5 O 12 :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 Ce 3+ to Ce 4+ 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. A shift of the luminescence quenching temperature is observed for GGAG samples with 〉 0.2% Ce.
Type of Medium:
Online Resource
ISSN:
0370-1972
,
1521-3951
DOI:
10.1002/pssb.201900504
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
208851-4
detail.hit.zdb_id:
1481096-7
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