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Título:
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Luminescence and Raman study of ?-Bi_2O_3 ceramics
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Autores:
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Piqueras de Noriega, Javier ;
Vila Santos, María ;
Díaz-Guerra Viejo, Carlos
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier Science SA, 2012-03-15
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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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Cathodoluminescence in the scanning electron microscope and photoluminescence in a confocal microscope have been used to investigate the luminescence properties of the stable monoclinic ?-phase of Bi_2O_3. Powders of this oxide have been sintered at temperatures of 500 °C and 750 °C in air or in nitrogen atmospheres. Spectra of the starting powder and of the samples treated at 500 °C show luminescence bands at 1.50 eV and 1.95 eV as well as a band at 2.1 eV, more prominent in nitrogen treated samples. Sintering at 750 °C leads to quenching of the 1.50 eV infrared emission and the formation of a broad band with emission above 3 eV. The evolution of Raman bands with the sintering treatments has also been investigated.
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En línea:
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https://eprints.ucm.es/id/eprint/23632/1/PiquerasJ19.pdf
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