Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/64122
Type: Artigo de periódico
Title: Effects of Cr3+ concentration on the optical properties of Cs2NaAlF6 single crystals
Author: Pedro, SS
Sosman, LP
Barthem, RB
Tedesco, JCG
Bordallo, HN
Abstract: This work is devoted to the study of optical properties of the elpasolite Cs2NaAlF6 with 0.1, 1.0, 3.0, 10.0, 30.0 and 50.0% of Cr3+ ions. The interest in this system lies on the fact that it presents a high quantum yield in the visible and infrared regions and therefore can be considered for laser applications. The photoluminescence and excitation spectra were obtained at 5 and 300 K, while the absorption spectra were measured at 300 K. The spectra at 300 K show broad bands attributed to the Cr3+ ions in two non-equivalent sites, both of them with octahedral coordination, while at 5 K we can observe the vibrational modes of the [CrF6](3-) complex. The ensemble of our results lead us to conclude that the material has potential applications as a lasing system. (c) 2012 Elsevier B.V. All rights reserved.
Subject: Luminescence
Optical properties
Insulators
Single crystal
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.jlumin.2012.09.005
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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