On the Quenching Mechanism of Ce, Tb Luminescence and Scintillation in Compositionally Disordered (Gd, Y, Yb)3Al2Ga3O12 Garnet Ceramics

被引：4

作者：

Dubov, Valery ^{[1
]}

Kuznetsova, Daria ^{[1
]}

Kamenskikh, Irina ^{[2
]}

Komendo, Ilia ^{[1
]}

Malashkevich, Georgii ^{[3
]}

Ramanenka, Andrei ^{[3
]}

Retivov, Vasili ^{[1
]}

Talochka, Yauheni ^{[4
]}

Vasil'ev, Andrei ^{[5
]}

Korzhik, Mikhail ^{[1
,4
]}

机构：

[1] Kurchatov Inst, Natl Res Ctr, Moscow 123098, Russia

[2] Lomonosov Moscow State Univ, Fac Phys, Moscow 119991, Russia

[3] Natl Acad Sci Belarus, BI Stepanov Inst Phys, Nezalezhnastsi Ave 68-2, Minsk 220072, BELARUS

[4] Belarusian State Univ, Inst Nucl Problems, 11 Bobruiskaya, Minsk 220030, BELARUS

[5] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia

来源：

PHOTONICS | 2023年 / 10卷 / 06期

关键词：

ceramics; garnet; cerium; terbium; luminescence; scintillation; luminescence quenching; CHARGE-TRANSFER LUMINESCENCE; INFRARED SCINTILLATION; SPECTROSCOPY; CRYSTALS; GLASSES; GROWTH; IODIDE; LIGHT; IONS; YB2+;

D O I：

10.3390/photonics10060615

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Two series of (Gd, Y, Yb)(3)Al2Ga3O12 quintuple compounds with a garnet structure and solely doped with Ce and Tb were prepared in the form of ceramics by sintering in oxygen at 1600 & DEG;C for two hours and studied for the interaction of activator ions with ytterbium ions entering the matrix. It was shown that the photoluminescence and scintillation of Ce3+ ions are completely suppressed, predominantly by tunneling ionization through the charge transfer state (CTS) of the Ce4+-Yb2+ ions. The photoluminescence of Tb3+ ions is quenched in the presence of ytterbium, but not completely due to the poor resonance conditions of Tb3+ intraconfiguration transitions and the CTS of the single Yb3+ and the CTS of Ce4+-Yb2+ ions. The scintillation in the visible range of both Ce3+- and Tb3+-doped samples is intensely quenched as well, which indicates strong competition from Yb3+ ions to activators in interaction with the Gd substrate.

引用

页数：14

共 55 条

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