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Near UV-blue excitable green-emitting nanocrystalline oxide

dc.contributor.authorRodríguez García, Carlos Eduardo
dc.contributor.authorPerea López, Néstor
dc.contributor.authorHirata Flores, Gustavo Alonso
dc.date.accessioned2018-04-03T19:23:14Z
dc.date.available2018-04-03T19:23:14Z
dc.date.issued2011
dc.identifier.citationC. E. Rodríguez-García, N. Perea-López, and G. A. Hirata. (2011). Near UV-Blue Excitable Green-Emitting Nanocrystalline Oxide. Advances in Materials Science and Engineering Volume 2011, Article ID 790517, http://dx.doi.org/10.1155/2011/790517
dc.identifier.urihttp://hdl.handle.net/11627/3776
dc.description.abstract"Green-emitting Eu-activated powders were produced by a two-stage method consisting of pressure-assisted combustion synthesis and postannealing in ammonia. The as-synthesized powders exhibited a red photoluminescence (PL) peak located at  nm when excited with  nm UV. This emission peak corresponds to the 5D0→7F2 transition in Eu3+. After annealing in ammonia, the PL emission changed to an intense broad-band peak centered at  nm, most likely produced by 4f65d1→4f7 electronic transitions in Eu2+. This green-emitting phosphor has excitation band in the near UV-blue region (–450 nm). X-ray diffraction analysis reveals mainly the orthorhombic EuAlO3 and Al2O3 phases. Transmission electron microscopy observations showed that the grains are formed by faceted nanocrystals (~4 nm) of polygonal shape. The excellent excitation and emission properties make these powders very promising to be used as phosphors in UV solid-state diodes coupled to activate white-emitting lamps."
dc.publisherHindawi
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.classificationCIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA
dc.titleNear UV-blue excitable green-emitting nanocrystalline oxide
dc.typearticle
dc.identifier.doihttp://dx.doi.org/10.1155/2011/790517
dc.rights.accessAcceso Abierto


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