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Título:
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?-Bi_2O_3 microcrystals and microrods: thermal synthesis, structural and luminescence properties
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Autores:
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Piqueras de Noriega, Javier ;
Díaz-Guerra Viejo, Carlos ;
Vila Santos, María
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier Science, 2013-01-25
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/restrictedAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Tipo = Artículo
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Resumen:
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?-Bi_2O-3 microcrystals and microrods with pyramidal tips have been grown by a vapour–solid method using pure Bi as starting material. The morphology of the obtained microstructures depends on the annealing temperature and time. At 650 °C and for short annealing times, microcrystals with well defined facets and sizes of tens of microns, as well as clusters of microcrystals, are formed. Microrods were grown at 800 °C, mainly from nucleation sites in the clusters of microcrystals, and reach lengths of hundreds of microns. Micro-Raman spectroscopy measurements reveal the homogeneity of the obtained microstructures regarding the crystalline ?-phase. The luminescence properties of the microrods have been investigated by cathodoluminescence in the scanning electron microscope and by photoluminescence in a confocal microscope. The obtained results were correlated with X-ray photoelectron spectroscopy measurements.
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En línea:
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https://eprints.ucm.es/id/eprint/23623/1/PiquerasJ08.pdf
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