Hydrothermal preparation and luminescence of LaF3 : Eu3 nanoparticles

作者：Meng, Jian Xin^*; Zhang, Mao Feng; Liu, Ying Liang; Man, Shi Qing

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2007, 66(1): 81-85.

DOI：10.1016/j.saa.2006.02.025

• hydrothermal
• nanoparticles
• LaF3
• luminescence

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 (similar to 25 mol%) 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.

• 出版日期2007-1
• 单位暨南大学