Journal of Inorganic Materials ›› 2015, Vol. 30 ›› Issue (4): 397-400.DOI: 10.15541/jim20140374

• Orginal Article • Previous Articles     Next Articles

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)

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

CLC Number: