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Memorias de investigación
Artículos en revistas:
Luminescence properties of AgTb(WO4)2 doped with Ce3+: Experimental determination of the Stern-Volmer quenching constant
Año:2017
Áreas de investigación
  • Física química y matemáticas,
  • Ingenierías
Datos
Descripción
Scheelite-like AgTb(WO4)2 doped Ce3+ were synthesized by ceramic method. Efficient characteristic bands of Tb3+ were observed in AgTb(WO4)2 compounds. However, the presence of Ce3+ quenched the emission band of Tb3+ which can be caused by metal-to-metal charge transfer between Tb3+/Ce3+. The quenching is more efficient at high temperature which can be attributed to more overlaps of wave functions of Ce3+-W6+-Tb3+ at high temperature. The experimental Stern-Volmer quenching rate constant at room temperature and liquid nitrogen temperature were measured as (376±4)·10-3 ?s-1 (x content/mol)-1 and (45±4)·10-3 ?s-1 (x content/mol)-1 respectively. In excitation spectra, evident blue shift of charge transfer band in the case of liquid nitrogen temperature was observed. In addition, the blue shift of CT band also occurred with increasing concentration of Ce3+. The shifting of charge transfer band can be interesting to the design of solar cells and tunable excitation sources and detectors.
Internacional
Si
JCR del ISI
Si
Título de la revista
Ceramics International
ISSN
0272-8842
Factor de impacto JCR
2,086
Información de impacto
Datos JCR del año 2013
Volumen
DOI
10.1016/j.ceramint.2017.02.012
Número de revista
43(8)
Desde la página
6163
Hasta la página
6167
Mes
JUNIO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: You Don Chaoyu . (UPM)
  • Autor: Maria Isabel de Andres Garcia (UPM)
  • Autor: Francisco Fernandez Martinez (UPM)
  • Autor: Cristobal Colon Hernandez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada
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