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Título: | Laser synthesis and luminescence properties of SrAl2O4:Eu2+, Dy3+ phosphors |
Autor: | Aroz, Raquel CSIC; Lennikov, V. CSIC ORCID; Cases, Rafael CSIC; Sanjuán, M. L. CSIC ORCID; Fuente, Germán F. de la CSIC ORCID ; Muñoz, Edgar CSIC ORCID | Fecha de publicación: | 2012 | Editor: | Elsevier | Citación: | Journal of the European Ceramic Society 32(16): 4363-4369 (2012) | Resumen: | A laser melting method has been developed for the synthesis of highly luminescent, long-lasting SrAl2O4:Eu2+, Dy3+ phosphors. The high temperature achieved in high-power density CO2 laser irradiation of mixtures of SrCO3, Al2O3, Eu2O3, and Dy2O3 enabled the one-step, fast synthesis of these phosphors in air at atmospheric pressure. X-ray diffraction, Raman spectroscopy, and scanning electron microscopy characterization studies reveal that the produced materials consist of monoclinic SrAl2O4 grains extensively surrounded by rare-earth ion-enriched grain boundaries. The photoluminescence properties of laser-produced SrAl2O4:Eu2+, Dy3+ materials are discussed. The results reported here suggest that this laser melting method is a promising route for the synthesis of ceramic phosphors. It is presented as an alternative to the conventional sol–gel and solid-state methods, which require the use of high-temperature furnaces, flux additives, and reducing atmospheres. | Versión del editor: | http://dx.doi.org/10.1016/j.jeurceramsoc.2012.06.013 | URI: | http://hdl.handle.net/10261/73706 | DOI: | 10.1016/j.jeurceramsoc.2012.06.013 | Identificadores: | doi: 10.1016/j.jeurceramsoc.2012.06.013 issn: 0955-2219 |
Aparece en las colecciones: | (ICB) Artículos (ICMA) Artículos |
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Laser Synthesis.pdf | 1,05 MB | Adobe PDF | Visualizar/Abrir |
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