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Title: Luminescence behavior of Eu3+ doped LaF3 nanoparticles
Authors: Pi, D.
Wang, F.
Fan, X.
Wang, M.
Zhang, Y. 
Keywords: Eu3+ ions
LaF3 nanoparticles
Issue Date: Sep-2005
Citation: Pi, D., Wang, F., Fan, X., Wang, M., Zhang, Y. (2005-09). Luminescence behavior of Eu3+ doped LaF3 nanoparticles. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy 61 (11-12) : 2455-2459. ScholarBank@NUS Repository.
Abstract: Europium-doped LaF3 nanoparticles have been prepared by the ionic reaction in the ethanol at 60 °C. From the XRD pattern of nanoparticles and the emission spectra of Eu3+ ions, it has been concluded that the Eu3+ ions could easily substitute the La 3+ sites and the solid solution La1-xEuxF 3 can be synthesized. Due to very low phonon energies of LaF 3 matrix, the 5D1 emission of Eu3+ ions in La1-xEuxF3 nanoparticles can be observed at room temperature when doping concentration of Eu3+ ions is lower than 30 mol%. The quenching process of 5D1 emission can be attributed to cross-relaxation. Since clusters of Eu 3+ ions and resonance energy transfer only occurs within one particle due to the hindrance by the particle boundary, the concentration quenching resulted from resonance energy transfer between neighboring Eu 3+ ions occurs at higher Eu3+ concentrations in the Eu3+ doped LaF3 nanoparticles. © 2004 Elsevier B.V.
Source Title: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
ISSN: 13861425
DOI: 10.1016/j.saa.2004.09.009
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