Effects of Er3+ doping concentration and calcination on fluorescence properties of La3Ga5.5Nb0.5O14 nanocrystals

✍ Scribed by F. P. Yu; D. R. Yuan; S. Y. Guo; X. L. Duan; X. Q. Wang; L. M. Kong; X. Q. Zhang; X. Zhao

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 134 KB
• Volume: 43
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200711095

✦ Synopsis

The effects of Er 3+ doping concentration and calcination were examined on the fluorescence properties of La 3 Ga 5.5 Nb 0.5 O 14 (Er:LGN) nanoparticles for the first time. High quality Er:LGN nanoparticles were synthesized by sol-gel method. The room temperature fluorescence spectra showed a green emission, which can be attributed to 2 H 11/2 -4 I 15/2 and 4 S 3/2 -4 I 15/2 transition. The relationship between the relative emission intensity and the doping concentration was investigated. The maximum of the Er 3+ doping concentration in LGN nanopowders is 2.0%. The fluorescent lifetime of 2.0% Er:LGN nanoparticles is 1.45ns.