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Published on: April 16, 2017
Hydrothermal preparation and luminescence of LaF3:Eu3+ nanoparticles
Jian-Xin Meng1, Mao-Feng Zhang, Ying-Liang Liu
1Department of Chemistry, Institute of Nano-chemistry, Jinan University, Guangzhou 510632, China. tmjx@jnu.edu.cn
Abstract:
LaF3:Eu3+ nanoparticles were prepared by a simple hydrothermal process at low temperature and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and fluorescence spectrum. Well-dispersed nanoparticles with an average size of 30 nm and a hexagonal shape were obtained. The influences of reaction temperature and time on the preparation and luminescence of LaF3:Eu3+ nanoparticles were investigated. Luminescent quenching occurred at a much higher concentration ( approximately 25mol%) and stronger luminescent intensity than in bulk LaF3:Eu3+. Fluorescence intensity of the LaF3:Eu3+ nanoparticles varied remarkably with calcination temperatures. It was found that samples without any further calcinations can emit quite strong fluorescence.
