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

被引：13
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
收藏
页码：49 / 52
页数：4
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