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第45卷第10期2017年10月
硅酸盐学报Vol. 45，No. 10
October，2017 JOURNAL OF THE CHINESE CERAMIC SOCIETY新闻选题
孙江1，徐书超1，宋武睿1，马明毅1，李美凡1，冀春延1，孟庆伟1，张坤2，王志军1
(1. 河北大学物理科学与技术学院，河北保定071002；2. 河北大学工商学院，河北保定，071002)
摘要：采用高温固相法制备了Ba2B2O5:Ce3+,Dy3+荧光粉，研究了荧光粉的发光特性及发光机理。结果表明：Ba2B2O5:Dy3+没有表现出长余辉发光特征，当掺杂Ce3+于Ba2B2O5:Dy3+后，荧光粉材料仍呈现为白色发光特征；但是Ba2B2O5:Ce3+,Dy3+表现出了明显的黄绿色长余辉发光特性，该发光主要由陷阱所释放导带电子与发光中心Dy3+的直接复合而产生的。研究结果将对长余辉发光材料的发展具有很好的参考意义。
关键词：硼酸钡；铈与镝掺杂；发光性能；长余辉荧光粉
中图分类号：O482.31 文献标志码：A 文章编号：0454–5648(2017)10–1454–05
网络出版时间：2017–07–14 11:38:58 网络出版地址：knski/kcms/detail/11.2310.TQ.20170714.1138.012.html Luminescence Property and Mechanism of Yellow-green Long Persistent Phosphor
Ba2B2O5:Ce3+,Dy3+
SUN Jiang1, XU Shuchao1, SONG Wurui1, MA Mingyi1, LI Meifan1, JI Chunyan1, MENG Qingwei1, ZHANG Kun2, WANG Zhijun1
(1. College of Physics Science & Technology, Hebei University, Baoding 071002, Hebei, China;
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2. Industrial & Commercial College, Hebei University, Baoding 071002, Hebei, China)
木瓜的味道Abstract: Ba2B2O5:Ce3+,Dy3+ phosphor was synthesized via a high-temperature solid state method, and the luminescence properties and mechanism were investigated. The results show that there is no long persistent luminescence in Dy3+ singe-doped Ba2B2O5. For Ce3+/Dy3+ co-doped in Ba2B2O5, the yellow-green long persistent luminescence phenomenon appears although the phosphor still emits white light, which may originate from the direct recombination of the conduction 隔离霜排行榜前十名的牌子
electrons relead from traps with the emission centers of Dy3+. The results obtained will be uful for the development of long afterglow materials.
Keywords: barium borate; cerium dysprosium co-doping;luminescence property; long persistent phosphor
snmpwalk1 Introduction
Persistent luminescence can be defined as an emission obtaind after the removal of an excitation source, which can be visible light, ultraviolet radiation, electron beam, plasma beam, X-rays, or even γ-rays. This kind of luminescence could last from a few minutes up to days[1–3]. The persistent luminescent materials have attracted recent attention for applications, such as rewritable three-dimensional optical memory materials, persistent photocatalysts, highenergy irradiation dosimeters, medical diagnostics and in vivo bio imaging[4–6].Rare-earth element ion Dy3+ is often ud as an activator of long afterglow materials, but so far the physical and chemical properties of the luminescence of Dy3+ activated persistent phosphors are still unclear[7]. The trapping and detrapping process of charge carrier in Dy3+ activated persistent phosphors becomes more clear. Nevertheless, the mechamism of persistent luminescence is hampered by the scarcity of persistent
phosphors along with the limitation of characterization methods. There are many aspects that still need a further consideration, such as, the nature of traps, the role of codoping lanthanide ions, the concentration quenching of persistent luminescence, the energy level of dopants with respect
收稿日期：2017–02–22。修订日期：2017–04–21。
基金项目：中国博士后基金(2015M581311)；国家级大学生创新、创业训练计划项目(201610075003)；河北大学大学生创新、创业
木属训练计划项目(2016128, 2016146)。
第一作者：孙江(1974—)，男，博士
通信作者：张坤(1979—)，女，硕士，讲师。Received date:2017–02–22. Revid date: 2017–04–21.
First author: SUN Jiang (1974–), male, Doctor.
E-mail:
西部游
Correspondent author: ZHANG Kun (1979–), female, Master, Lecturer. E-mail:
