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Memorias de investigación
Artículos en revistas:
Characterization and Photoluminescence Properties of AgLn(MoO4)(WO4): Novel Silver Based Scheelite-type Compounds
Año:2019
Áreas de investigación
  • Fisica sm -- estructura de materiales
Datos
Descripción
Novel silver based rare earth tungstate-molybdate, AgLn(MoO4)(WO4), with scheelite-like structure have been synthesized by ceramic method. The crystal structure, luminescence properties and fluorescence lifetime of a series compounds were investigated systematically. Some special characteristic emission bands were observed which can be attributed by the energy transfer between Ag+ and Ln3+ ions. Especially, AgDy(MoO4)(WO4) and AgHo(MoO4)(WO4) phosphors can emit white light under near-UV excitation, with chromaticity coordinates at about (0.3605, 0.3652) and (0.3559, 0.3479) respectively. Fluorescence lifetime of Eu3+ and Tb3+ were measured in both room temperature and liquid nitrogen temperature. In excitation spectra, the evident blue shift of charge transfer (CT) band in the case of liquid nitrogen temperature indicates that the effective W-O and Mo-O covalence bond is lower at liquid nitrogen temperature which can be caused by the lower wave function overlaps of W-O and Mo-O. Furthermore, low temperature showed positive effect for longer fluorescence lifetime.
Internacional
Si
JCR del ISI
Si
Título de la revista
Journal of Luminescence
ISSN
0022-2313
Factor de impacto JCR
2,732
Información de impacto
Datos JCR del año 2017
Volumen
DOI
10.1016/j.jlumin.2019.02.047
Número de revista
210
Desde la página
255
Hasta la página
260
Mes
SIN MES
Ranking
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Participantes
  • Autor: Cristobal Colon Hernandez (UPM)
  • Autor: Francisco Fernandez Martinez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Análisis y Caracterización Óptica de Materiales
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