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http://cicese.repositorioinstitucional.mx/jspui/handle/1007/1742| Near UV-Blue Excitable Green-Emitting Nanocrystalline Oxide | |
| Carlos Eduardo Rodriguez Garcia | |
| NESTOR PEREA LOPEZ GUSTAVO ALONSO HIRATA FLORES | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| http://dx.doi.org/10.1155/2011/790517 | |
| Near UV-Blue, Nanocrystalline Oxide, UV-Blue, Phosphors, UV | |
| "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 λ = 616 nm when excited with λ = 395 nm UV. This emission peak corresponds to the <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub> transition in Eu<sup>3+</sup>. After annealing in ammonia, the PL emission changed to an intense broad-band peak centered at λ = 500 nm, most likely produced by 4f<sup>6</sup>5d<sup>1</sup> → 4f<sup>7</sup> electronic transitions in Eu<sup>2+</sup>. This green-emitting phosphor has excitation band in the near UV-blue region (λ = 300–450 nm). Xray diffraction analysis reveals mainly the orthorhombic EuAlO<sub>3</sub> and Al<sub>2</sup>O<sub>3</sub> 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." | |
| Hindawi Publishing Corporation | |
| 2011 | |
| Artículo | |
| Advances in Materials Science and Engineering, Vol. 2011, Págs. 1-7 | |
| Inglés | |
| Rodríguez García,C.E.,Perea López,N.,Hirata Flores,G.A.2011.Near UV-Blue Excitable Green-Emitting Nanocrystalline Oxide.Advances in Materials Science and Engineering,2011,1-7.doi:10.1155/2011/790517 | |
| CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | Artículos - Electrónica y Telecomunicaciones |
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