S. Pedro, Sandra2; P. Sosman, Lilian7; B. Barthem, Ricardo8; C.G. Tedesco, Julio9; Bordallo, Heloisa N.10
1 Condensed Matter Physics, The Niels Bohr Institute, Faculty of Science, Københavns Universitet2 Instituto de Física, Universidade Federal Fluminense3 Universidade do Estado do Rio de Janeiro4 Universidade Federal do Rio de Janeiro5 Universidade Estadual de Campinas6 Xray and Neutron Science, The Niels Bohr Institute, Faculty of Science, Københavns Universitet7 Universidade do Estado do Rio de Janeiro8 Universidade Federal do Rio de Janeiro9 Universidade Estadual de Campinas10 Xray and Neutron Science, The Niels Bohr Institute, Faculty of Science, Københavns Universitet
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.
Journal of Luminescence, 2013, Vol 134, p. 100-106