Dependence of Ce3+ - related photo- and thermally stimulated luminescence characteristics on Mgt2+ content in single crystals and epitaxial films of Gd3(Ga,Al)5O12:Ce,Mg

被引：29

作者：

Babin, V. ^{[1
]}

Bohacek, P. ^{[1
]}

Jurek, K. ^{[1
]}

Kucera, M. ^{[2
]}

Nikl, M. ^{[1
]}

Zazubovich, S. ^{[3
]}

机构：

[1] Inst Phys AS CR, Cukrovarnicka 10, Prague 16200, Czech Republic

[2] Charles Univ Prague, Fac Math & Phys, Ke Karlovu 5, CR-12116 Prague, Czech Republic

[3] Univ Tartu, Inst Phys, W Ostwaldi 1, EE-50411 Tartu, Estonia

来源：

OPTICAL MATERIALS | 2018年 / 83卷

关键词：

Luminescence; Gd-3(Ga; Al)(5)O-12:Ce; Mg; Single crystals; Epitaxial films; Scintillators; LOW-TEMPERATURE THERMOLUMINESCENCE; DOPED GD3AL2GA3O12 CRYSTALS; DEFECTS FORMATION PROCESSES; SCINTILLATION PROPERTIES; ENERGY-TRANSFER; CZOCHRALSKI GROWTH; GARNETS; GAGGCE; PERFORMANCE; AL;

D O I：

10.1016/j.optmat.2018.05.087

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoluminescence and thermally stimulated luminescence of Gd-3(Ga,Al)(5)O-12:Ce single crystals and epitaxial films co-doped with different concentrations of Mg2+ ions are investigated in the 77-500 K temperature range under excitation in the 4f - 5d(1) and 4f - 5d(2) absorption bands of Ce3+ ions. Influence of Mg2+ ions on the photoluminescence intensity, spectrum, decay kinetics, temperature dependence of the photoluminescence intensity, and the activation energy of luminescence thermal quenching is observed. Co-doping with Mg2+ is shown to result in a drastic reduction of the afterglow and thermally stimulated luminescence and in a strong shortening of the afterglow decay kinetics. It influences also defects creation spectra and the activation energy of the photostimulated defects creation. The Mg2+ - induced changes in the characteristics of the Gd-3(Ga,Al)(5)O-12:Ce, Mg single crystals and epitaxial films are found to be strongly different, and possible reasons of these differences are discussed.

引用

页码：290 / 299

页数：10

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