Photoluminescence and scintillation properties of Dy-doped SrY2O4 single crystals

被引：0

作者：

Endo, Yusuke ^{[1
]}

Ichiba, Kensei ^{[1
]}

Nakauchi, Daisuke ^{[1
]}

Miyazaki, Keiichiro ^{[1
]}

Watanabe, Kenichi ^{[2
]}

Kato, Takumi ^{[1
]}

Kawaguchi, Noriaki ^{[1
]}

Yanagida, Takayuki ^{[1
]}

机构：

[1] Nara Inst Sci & Technol NAIST, Ikoma, Nara 6300192, Japan

[2] Kyushu Univ, Grad Sch Engn, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan

来源：

JOURNAL OF LUMINESCENCE | 2025年 / 286卷

关键词：

Radioluminescence; Afterglow; Floating zone method; X-ray detection; Light yield; TB3+;

D O I：

10.1016/j.jlumin.2025.121413

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Currently, CdWO4, Tl:CsI, and Pr:Gd2O2S are commonly used scintillators for X-ray detectors; however, each has inherent drawbacks in terms of containing harmful Cd, deliquescence, and optical transparency. With the aim of developing new scintillators that solve these issues, Sr(Y1-xDyx)2O4 (x = 0.05 %, 0.1 %, 0.5 %, and 1 %) single crystals were synthesized using the floating zone method, and their photoluminescence and scintillation properties were evaluated. Emission peaks corresponding to the 4f-4f transitions of Dy3+ were observed under X-ray irradiation. Among the samples, the x = 0.1 % sample exhibited the highest scintillation light yield of 15,000 photons/MeV under gamma-ray irradiation, comparable to commercially available CdWO4 (15,800 photons/MeV). Although the afterglow level requires further improvement, the present results suggest a promising scintillator showing good light yield and high chemical stability without toxic elements.

引用

页数：6

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