Photoluminescence, photo-stimulated luminescence and thermoluminescence properties of CaB2O4 crystals activated with Ce3+

被引：14

作者：

Fujimoto, Yutaka ^{[1
]}

Yanagida, Takayuki ^{[2
]}

Koshimizu, Masanori ^{[1
]}

Asai, Keisuke ^{[1
]}

机构：

[1] Tohoku Univ, Aoba Ku, Sendai, Miyagi 9808579, Japan

[2] Kyushu Inst Technol, Wakamatsu Ku, Kitakyushu, Fukuoka 8080196, Japan

来源：

OPTICAL MATERIALS | 2015年 / 41卷

关键词：

Photo-stimulated luminescence; Thermoluminescence; Ce3+ 5d-4f transition; METABORATE;

D O I：

10.1016/j.optmat.2014.11.049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoluminescence (PL), photo-stimulated luminescence (PSL), and thermoluminescence (TL) properties of a Ce-doped CaB2O4 crystal were studied. The Ce-doped crystal was prepared by the simple solidification method using a Pt crucible under nitrogen atmosphere. A PL emission band in the 350-370 nm wavelength range was obtained under excitation at 325 nm owing to the 5d (t(2g))-4f (F-2(5/2), F-2(7/2))-allowed transition of the Ce3+ emission center. The fluorescence quantum efficiency and the decay time of Ce3+ were estimated to be about 70% and 29 ns, respectively. The 5d-4f emission band of Ce3+ also appeared in the 350-370 nm wavelength range in the TL. and PSL spectra. Good linear TL and PSL responses were observed in the 1-1000 mGy and 1-10,000 mGy X-ray dose range, respectively. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：49 / 52

页数：4

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