影像科学与光化学 ›› 2017, Vol. 35 ›› Issue (6): 824-832.DOI: 10.7517/j.issn.1674-0475.2017.05.006

• 论文 • 上一篇    下一篇

高温固相合成Gd2O2S:Tb3+微米亚微米晶及其发光性能研究

张建刚1, 谢晋鹏1,2, 马望京2, 梁庆华2, 李智2   

  1. 1. 山西农业大学 文理学院, 山西 太谷 030801;
    2. 中国科学院 理化技术研究所, 北京 100190
  • 收稿日期:2016-12-19 修回日期:2017-03-17 出版日期:2017-11-15 发布日期:2017-11-15
  • 通讯作者: 马望京, 李智

High Temperature Solid Phase Synthesis and Characterization of Gd2O2S:Tb3+ Micro/Submicro Crystals

ZHANG Jiangang1, XIE Jinpeng1,2, MA Wangjing2, LIANG Qinghua2, LI Zhi2   

  1. 1. School of Arts and Sciences, Shanxi Agricultural University, Taigu 030801, Shanxi, P. R. China;
    2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
  • Received:2016-12-19 Revised:2017-03-17 Online:2017-11-15 Published:2017-11-15

摘要:

通过高温固相法合成Gd2O2S:Tb3+微米亚微米晶,研究了不同反应条件对晶体生长及其荧光发光性能的影响。利用场发射扫描电镜(FE-SEM)、高分辨透射电子显微镜(HRTEM)、X射线粉末衍射仪(XRD)和荧光光谱(PL)对Gd2O2S:Tb3+粉末进行表征。结果表明:反应时间、温度及Tb掺杂量对产物的荧光发光强度有显著影响,当Tb3+掺杂量为7%时,在900℃下反应4 h的样品荧光强度最佳。实验合成的Gd2O2S:Tb3+粉末具有优越的发光性能,用254 nm光激发时,在λ=543 nm处有一对应于Tb3+5D47F5)跃迁的强发射峰。

关键词: 微米亚微米晶, 高温固相, 硫氧化钆, 发光

Abstract:

Gd2O2S:Tb3+ micro/submicro crystals were prepared by high temperature solid phase method and the effects of reaction conditions on the crystals' growth and its luminescence properties were investigated. By means of characterization methods of field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscope (HRTEM), the X-ray powder diffraction (XRD) and fluorescence spectroscopy (PL), the results obtained show that each factor such as reaction time, temperature and Tb3+ doping quantity in the Gd2O2S:Tb3+ crystals' growth et. al. has obviously effect on the luminescence properties. The sample doped with 7% of Tb3+, which was synthesized at 900℃ for 4 h has the optimal fluorescence performance. The Gd2O2S:Tb3+ synthesized as above has excellent luminescent properties:a strong emission peak at λ=543 nm appears when the crystals were excited by 254 nm light, which corresponds to Tb3+(5D47F5) transition.

Key words: micro/submicro crystal, high temperature solid phase, gadolinium oxysulfide, luminescent