Synthesis and characterization of BaLuF5: Tb3+ oxyfluoride glass ceramics as nanocomposite scintillator for X-ray imaging

被引：45
作者：
Cao, JiangKun [1 ]
Chen, WeiPing [1 ,2 ]
Chen, LiPing [1 ]
Sun, XinYuan [3 ]
Guo, Hai [1 ]
机构：
[1] Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China
[2] Key Lab Adv Mat Yunnan Prov, 304 Xuefu Rd, Kunming 650093, Peoples R China
[3] Jinggangshan Univ, Dept Phys, Jian 343009, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2016年 / 42卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Nanocomposites; Glass; Glass ceramics; Luminescence; ENHANCED EMISSIONS; ENERGY-TRANSFER; OPTICAL THERMOMETRY; UP-CONVERSION; LUMINESCENCE;
D O I：
10.1016/j.ceramint.2016.08.114
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Tb3+-dopedoxy-fluoride glass ceramics (GC) containing BaLuF5 nanocrystals were manufactured successfully by melt-quenching method with further thermal treatment. Their micro-structural and optical properties were investigated systemically by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM) techniques, transmittance spectra, photoluminescence (PL), luminescence lifetime measurements and X-ray excited luminescence (XEL). PL and XEL from BaLuF5:Tb3+ GC are both highly enhanced after further thermal treatment benefiting from the preferential in-corporation of Tb3+ ions into the crystallized BaLuF5 nanocrystals with low phonon energy. Impressively, the integrated XEL intensity for GC640 is about 26% of the commercial BGO scintillator. Our investigation indicates that such Tb3+-doped transparent BaLuF5 GC are potential candidates of X-ray scintillators for slow event detection. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：17834 / 17838
页数：5
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