Electronic band modification for faster and brighter Ce,Mg:Lu3-xYxAl5O12 ceramic scintillators

doi:10.1016/j.jlumin.2019.116545

SIC OpenIR

	Electronic band modification for faster and brighter Ce,Mg:Lu3-xYxAl5O12 ceramic scintillators
	Chen, Xiaopu; Hu, Zewang; Feng, Yagang; Liu, Xin; Chen, Haohong; Shi, Yun; Kou, Huamin; Kucerkova, Romana; Beitlerova, Alena; Mihokova, Eva; Nikl, Martin; Li, Jiang
	2019-10-01
Source Publication	JOURNAL OF LUMINESCENCE
ISSN	0022-2313
Volume	214
Subtype	Article
Abstract	Ce,Mg:LuYAG transparent ceramics were successfully fabricated by the solid state reaction method. The results of x-ray diffraction, photoluminescence, light yield, scintillation decay and thermoluminescence are analyzed to provide better understanding of the influence of the Y3+ admixture in LuAG on the lattice structure, electronic band structure, energy-level structure of Ce3+ centers and scintillation properties. The lattice parameter of Ce,Mg:LuYAG ceramics shows a linear growth with the increasing Y content, which is in agreement with Vegard's law. Reducing the Lu-to-Y ratio in the LuYAG matrix, the Ce3+ 5d(1) energy level shifts to a lower energy, the forbidden gap becomes narrower and the electron traps become shallower. Furthermore, the increase of light yield and accelerated slow scintillation component are found with increasing Y admixture. After optimization, the light yield of Ce,Mg:Lu0.5Y2.5Al5O12 ceramics is achieved to 24,500 ph/MeV with 1 mu s shaping time, which is 40% higher than the value in the Y-free Ce,Mg:LuAG ceramic sample.
Keyword	Ce,Mg:LuYAG ceramics Y admixture Scintillation yield Decay kinetics
DOI	10.1016/j.jlumin.2019.116545
Language	英语
WOS Research Area	Optics
Publisher	ELSEVIER
Citation statistics	Cited Times:2[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/26801
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Chen, Xiaopu,Hu, Zewang,Feng, Yagang,et al. Electronic band modification for faster and brighter Ce,Mg:Lu3-xYxAl5O12 ceramic scintillators[J]. JOURNAL OF LUMINESCENCE,2019,214.
APA	Chen, Xiaopu.,Hu, Zewang.,Feng, Yagang.,Liu, Xin.,Chen, Haohong.,...&Li, Jiang.(2019).Electronic band modification for faster and brighter Ce,Mg:Lu3-xYxAl5O12 ceramic scintillators.JOURNAL OF LUMINESCENCE,214.
MLA	Chen, Xiaopu,et al."Electronic band modification for faster and brighter Ce,Mg:Lu3-xYxAl5O12 ceramic scintillators".JOURNAL OF LUMINESCENCE 214(2019).

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