Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Luminescence properties of AgTb(WO4)2 doped with Ce3+: Experimental determination of the Stern-Volmer quenching constant
Year:2017
Research Areas
  • Physics chemical and mathematical,
  • Engineering
Information
Abstract
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.
International
Si
JCR
Si
Title
Ceramics International
ISBN
0272-8842
Impact factor JCR
2,086
Impact info
Datos JCR del año 2013
Volume
10.1016/j.ceramint.2017.02.012
Journal number
43(8)
From page
6163
To page
6167
Month
JUNIO
Ranking
Participants
  • Autor: You Don Chaoyu . (UPM)
  • Autor: Maria Isabel de Andres Garcia (UPM)
  • Autor: Francisco Fernandez Martinez (UPM)
  • Autor: Cristobal Colon Hernandez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)