Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/551
Title: Highly efficient low-voltage cathodoluminescence of LaF₃:Ln[sup 3+] (Ln=Eu[sup 3+], Ce[sup 3+], Tb[sup 3+]) spherical particles
Authors: Wang, Z
Chan, HLW 
Li, H
Hao, JH 
Issue Date: 8-Oct-2008
Source: Applied physics letters, 8 Oct. 2008, v. 93, 141106, p. 1-3
Abstract: Spherical particles of rare-earth doped LaF₃ are synthesized through refluxing in glycerol/water media. The low-voltage cathodoluminescence of LaF₃ :Eu due to [sup 5]D[sub 0]→[sup 7]F₁ and [sup 5]D[sub 0]→[sup 7]F₂ transitions was found to be sensitive to the site that Eu[sup 3+] ions occupied. The luminous efficiency of LaF₃:Ce[sup 3+], Tb[sup 3+] with green emission is improved from 1.53 to 2.02 lm/W compared with LaF₃:Tb[sup 3+], due to the energy transfer processes from Ce[sup 3+] to Tb[sup 3+] ions. Our results suggest that the obtained spherical particles of rare-earth doped LaF₃ are promising as highly efficient low-voltage cathodoluminescent phosphors, which have received considerably less attention.
Keywords: Cathodoluminescence
Cerium
Europium
Lanthanum compounds
Terbium
Publisher: American Institute of Physics
Journal: Applied physics letters 
ISSN: 0003-6951
EISSN: 1077-3118
Rights: © 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Z. Wang et al., Appl. Phys. Lett. 93, 141106 (2008) and may be found at http://link.aip.org/link/?apl/93/141106
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