X-ray Excited Luminescence from Cr Doped YAG Crystals

被引：3

作者：

Katsumata, Toru ^{[1
,2
]}

Ogawa, Misa ^{[1
]}

Takahagi, Kotomi ^{[1
]}

Isobe, Ayame ^{[1
]}

Aizawa, Hiroaki ^{[1
]}

机构：

[1] Toyo Univ, Fac Sci & Engn, 2100 Kujirai, Kawagoe, Saitama 3508585, Japan

[2] Toyo Univ, Res Inst Ind Technol, 2100 Kujirai, Kawagoe, Saitama 3508585, Japan

来源：

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | 2021年 / 10卷 / 05期

关键词：

OPTICAL LUMINESCENCE; STATE;

D O I：

10.1149/2162-8777/ac029e

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

X-ray excited visible light luminescence were evaluated from Cr doped Y3Al5O12 (YAG) crystals using an X-ray powder diffractometer adapting a fiber spectrometer, a digital camera, and a LED illumination. Red colored luminescence peaking at lambda = 678, 690, 708, and 726 nm were observed from Cr doped YAG under irradiation by both CuK alpha X-ray and a violet LED (lambda = 405 nm). Peak wavelengths of X-ray excited luminescence are the same as those of photoluminescence (PL). The peak intensities of X-ray excited luminescence, which increases linearly with X-ray strength, increases up to Cr concentration at around 0.5 mol%, then decreases gradually with Cr concentration due to a concentration quenching. It was found that the concentration quenching of X-ray excited luminescence occurs at a lower concentration at around 0.5 mol% than that of PL at around 3.5 mol%.

引用

页数：6

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