@article{140ec58127064627a424ee41d7d915d8,
title = "Relationship Between Li/Ce Concentration and the Luminescence Properties of Codoped Gd3(Ga, Al)5O12:Ce",
abstract = "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. A shift of the luminescence quenching temperature is observed for GGAG samples with >0.2% Ce.",
keywords = "Gd3(Ga, Al)5O12, Li codoping, concentration effects, scintillators, single crystals",
author = "Masao Yoshino and Karol Bartosiewicz and Takahiko Horiai and Kei Kamada and Akihiro Yamaji and Yasuhiro Shoji and Yuui Yokota and Shunsuke Kurosawa and Yuji Ohashi and Hiroki Sato and Satoshi Toyoda and Romana Kucerkova and Vitezslav Jary and Martin Nikl and Akira Yoshikawa",
note = "Funding Information: This work was supported by JSPS KAKENHI Early‐Career Scientists Grant Number JP19K17191. Partial support of the Operational Programme Research, Development, and Education financed by European Structural and Investment Funds and the Czech Ministry of Education, Youth and Sports (project no. SOLID21 CZ.02.1.01/0.0/0.0/16_019/0000760) is gratefully acknowledged. The authors thank Esther Posner, Ph.D., from Edanz Group ( www.edanzediting.com/ac ) for editing a draft of this manuscript. Publisher Copyright: {\textcopyright} 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
year = "2020",
month = aug,
day = "1",
doi = "10.1002/pssb.201900504",
language = "English",
volume = "257",
journal = "Physica Status Solidi (B): Basic Research",
issn = "0370-1972",
publisher = "Wiley-VCH Verlag",
number = "8",
}