Luminescent and scintillation properties of Ce3+ doped Ca2RMgScSi3O12 (R = Y, Lu) single crystalline films

被引：9

作者：

Gorbenko, V. ^{[1
]}

Zorenko, T. ^{[1
]}

Pawlowski, P. ^{[1
]}

Iskaliyeva, A. ^{[1
]}

Paprocki, K. ^{[1
]}

Suchocki, A. ^{[1
,2
]}

Zhydachevskii, Ya. ^{[2
]}

Fedorov, A. ^{[3
]}

Khaidukov, N. ^{[4
]}

Van Deun, R. ^{[5
]}

Schroeppel, F. ^{[6
]}

Osvet, A. ^{[6
]}

Batentschuk, M. ^{[6
]}

Zorenko, Yu. ^{[1
]}

机构：

[1] Kazimierz Wielki Univ Bydgoszcz, Inst Phys, PL-85090 Bydgoszcz, Poland

[2] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[3] Natl Acad Sci Ukraine, SSI Inst Single Crystals, Av Nauki 60, UA-61178 Kharkov, Ukraine

[4] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia

[5] Univ Ghent, Dept Inorgan & Phys Chem, Luminescent Lanthanide Lab, B-9000 Ghent, Belgium

[6] Univ Erlangen Nurnberg, Dept Mat Sci & Engn 6, Inst Mat Elect & Energy Technol, D-91058 Erlangen, Germany

来源：

JOURNAL OF LUMINESCENCE | 2018年 / 195卷

关键词：

Scintillators; Garnets; Single crystalline films; Liquid phase epitaxy; Ce dopant; EPITAXIAL-GROWTH; ENERGY-TRANSFER; PHOSPHORS; LSO; TB; PEROVSKITE; SCREENS; OXIDES;

D O I：

10.1016/j.jlumin.2017.11.052

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The work is dedicated to the growth and investigation of the luminescent and scintillation properties of single crystalline films (SCFs) of Ca2-xR1+xMg1+xSc1-xSi3O12:Ce (R = Y, Lu) mixed garnets with x = 0-0.25, grown using the liquid phase epitaxy method onto Y3Al5O12 substrates from PbO-B2O3 based flux. The absorption, luminescent and scintillation properties of Ca2-xY1+xMg1+xSc1-xSi3O12:Ce and Ca2-xLu1+xMg1+xSc1-xSi3O12:Ce SCFs with x = 0 and 0.25 were investigated and compared with the reference YAG:Ce and LuAG:Ce SCFs. Using the Ca2+, Mg2+ and Si4+ alloying, the Ce3+ emission spectra in Ca2-xR1+xMg1+xSc1-xSi3O12:Ce (R = Y, Lu; x = 0-0.25) SCFs can be notably extended in the red range in comparison with YAG: Ce and LuAG: Ce SCFs due to the increase of crystal field strength and Ce3+ multicenter creation in the dodecahedral positions of the lattices of these mixed garnet compounds. Due to the formation of Ce4+ ions, the as-grown Ca2-xR1+xMg1+xSc1-xSi3O12:Ce (R = Y, Lu) SCFs at x = 0 and 0.25 show relatively low light yield. However, after annealing in reducing atmosphere (95% N-2 + 5% H-2) at T > 1000 degrees C, a recharging Ce4+ -> Ce3+ takes place. After that, these SCFs possess the light yield about of 30% and 31% in comparison with the reference YAG: Ce and LuAG: Ce SCFs, respectively, and a fast scintillation response with the decay times in the ns range under a-particles excitation by Pu-239 (5.15 MeV) source.

引用

页码：362 / 370

页数：9

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