无机材料学报 ›› 2015, Vol. 30 ›› Issue (4): 397-400.DOI: 10.15541/jim20140374

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Eu2+/Tb3+掺杂的Sr2Si5N8基荧光粉的制备与发光性能

彭 霞1, 2, 李淑星1, 2, 刘学建1, 黄毅华1, 黄政仁1, 李会利3   

  1. (1. 中国科学院 上海硅酸盐研究所, 高性能陶瓷和超微结构国家重点实验室, 上海200050; 2. 中国科学院大学, 北京100049; 3. 华东师范大学 物理系, 上海200062)
  • 收稿日期:2014-07-21 修回日期:2014-08-27 出版日期:2015-04-29 网络出版日期:2015-03-26
  • 作者简介:彭 霞(1988–), 女, 硕士研究生. E-mail: pengxia@student.sic.ac.cn
  • 基金资助:
    国家自然科学基金(51172263, 51472087);上海市自然科学基金(12ZR1451900)

Syntheses and Photoluminescence Properties of Eu2+/Tb3+ Doped
Sr2Si5N8 Phosphors

PENG Xia1,2, LI Shu-Xing1,2, LIU Xue-Jian1, HUANG Yi-Hua1, HUANG Zheng-Ren1, LI Hui-Li3   

  1. (1.The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. Department of Physics, East China Normal University, Shanghai 200062, China)
  • Received:2014-07-21 Revised:2014-08-27 Published:2015-04-29 Online:2015-03-26
  • About author:PENG Xia. E-mail: pengxia@student.sic.ac.cn
  • Supported by:
    National Natural Science Foundation of China(551172263, 51472087);Shang hai Municipal Natural Science Foundation (12ZR1451900)

摘要:

采用碳热还原氮化法合成了Eu2+/Tb3+掺杂的Sr2Si5N8基荧光粉, 并重点研究了Tb3+-Eu2+共掺时Sr2Si5N8基荧光粉的发光性能。研究结果表明: 由于Tb3+的f → d间的跃迁是自旋允许的, Sr2Si5N8:Tb3+在330 nm激发光下, 在490、543、585和623 nm四处各有一发射峰, 它们分别来源于Tb3+5D47Fj (j = 6、5、4、3)能级跃迁; 掺入Tb3+对Sr1.96Si5N8:0.04Eu2+的激发谱和发射谱的形状及峰位无明显影响, 当共掺离子Tb3+浓度为x = 0.01时, 样品发射强度比未共掺的Sr1.96Si5N8:0.04Eu2+提高了约20%, Tb3+主要通过电多极能量传递的方式转向Eu2+

关键词: 碱土金属氮硅化物, 碳热还原氮化法, 发光性能, 能量传递

Abstract:

Eu2+/Tb3+ doped Sr2Si5N8 phosphors were prepared by carbothermal reduction and nitridation method. The luminescence of Tb3+/Eu2+ co-doped Sr2Si5N8 were investigated. The experimental results indicated that owing to spin-allowed f → d transition rule the four emission lines located at 490, 543, 585, and 623 nm which ascribed to the 5D47Fj (j = 6, 5, 4, 3) transitions were observed under 330 nm excitation. No obvious changes in spectral line shape were observed for Sr2Si5N8:Eu2+ co-doped with Tb3+. However, the emission intensity was improved by about 20% with Tb3+ doping concentration of x = 0.01 mainly because of the electric multipole energy transfer from Tb3+ to Eu2+.

Key words: alkaline-earth-silicon-nitrides, carbothermal reduction and nitridation method, luminescence, energy transfer

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