Effects of Er3+ doping concentration and calcination on fluorescence properties of La3Ga5.5Nb0.5O14 nanocrystals by F. P. Yu, D. R. Yuan, S. Y. Guo, X. L. Duan, X. Q. Wang, L. M. Kong, X. Q. Zhang, and X. Zhao

Crystal Research and Technology

Cryst. Res. Technol. 43, 522 (2008) - Abstract -

Effects of Er³⁺ doping concentration and calcination on fluorescence properties of La₃Ga_5.5Nb_0.5O₁₄ nanocrystals

F. P. Yu, D. R. Yuan, S. Y. Guo, X. L. Duan, X. Q. Wang, L. M. Kong*, X. Q. Zhang, and X. Zhao

State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, P. R. China
*Institute 53 of Chinas Ordnance Industry, P.O. Box 108, Jinan 250031, P. R. China

Keywords	doping, fluorescence, nanocrystal, sol-gel
PACS	81.10.-h
DOI	10.1002/crat.200711095

The effects of Er³⁺ doping concentration and calcination were examined on the fluorescence properties of La₃Ga_5.5Nb_0.5O₁₄ (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 ²H_11/2-⁴I_15/2 and ⁴S_3/2-⁴I_15/2 transition. The relationship between the relative emission intensity and the doping concentration was investigated. The maximum of the Er³⁺ doping concentration in LGN nanopowders is 2.0%. The fluorescent lifetime of 2.0% Er:LGN nanoparticles is 1.45ns.

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