广东工业大学学报 ›› 2013, Vol. 30 ›› Issue (2): 22-27.doi: doi:10.3969/j.issn.1007-7162.2013.02.005

• 综合研究 • 上一篇    下一篇

Ba2B5O9Cl：Eu2+，Ln3+(Ln=Dy,Er,Ho)的光致发光和长余辉特性

梁锋1,  居桂方1,  吴浩怡2, 胡义华1   

  1. 1.广东工业大学 物理与光电工程学院，广东 广州 510006；2.清华大学深圳研究生院 能源与环境学部，广东 深圳 518055
  • 收稿日期:2013-02-22 出版日期:2013-06-27 发布日期:2013-06-27
  • 作者简介:梁锋（1989-），男，硕士研究生，主要研究方向为LED发光材料.
  • 基金资助:

    国家自然科学基金资助项目（21271049）;  中国博士后基金资助项目（2012M520260）

Properties of Photoluminescence and Afterglow of Phosphors Ba2B5O9Cl：Eu2+，Ln3+(Ln=Dy,Er,Ho)

Liang Feng1, Ju Gui-fang1, Wu Hao-yi2， Hu Yi-hua1   

  1. 1. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China; 2. Division of Energy and Environment, Graduate School at Shenzhen of Tsinghua University, Shenzhen 518055, China
  • Received:2013-02-22 Online:2013-06-27 Published:2013-06-27

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摘要： 采用高温固相反应法制备了系列稀土掺杂蓝色荧光粉Ba1.92B5O9Cl:Eu2+0.06,Ln3+0.02(Ln=Dy,Er,Ho).用X射线粉末衍射仪（XRD）对样品晶相进行了测试，用荧光光谱仪表征了样品的光致发光特性.结果表明：共掺不同稀土元素Ln3+(Ln=Dy,Er,Ho)的Ba2B5O9Cl：Eu2+样品为四方晶系；除了发光强度不同外，其激发、发射光谱的峰位置和峰形基本没有改变.通过研究荧光材料的余辉衰减曲线和热释光谱发现, Ba2B5O9Cl：Eu2+掺入的Ln3+能够延长荧光粉的余辉时间和增强初始亮度，并能不同程度地增强热释光强度，其中Dy3+是最理想掺杂稀土离子.

关键词: 蓝色荧光;长余辉;氯硼酸钡;热释光

Abstract: A series of blue phosphorBa1.92B5O9Cl:Eu2+0.06 with different Ln3+(Ln=Dy,Er,Ho) co-dopants were synthesized via high temperature solid-state method. All samples were tested with X-ray diffraction, and photoluminescence spectra of the phosphors were measured with Fluorescence Spectrophotometer. The results show thatBa2B5O9Cl：Eu2+,Ln3+powders are tetragonal systems. The position and shape of the main peaks of photoluminescence spectra and excitation spectra have not changed except the intensity of the peaks after the rare earth Ln3+(Ln=Dy,Er,Ho) were co-doped. The co-doped Ln3+can prolong the persistence and enhance the intensity of afterglow and thermoluminescence inordinately. Among them, Dy3+ is the best one.  

Key words: blue phosphor; long afterglow; choroborates barium; thermluminescence

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