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Luminescence of polymer electrolytes containing europium (III)

Published online by Cambridge University Press:  03 March 2011

L.D. Carlos ,
M. Assunção  and
L. Alcácer
L.D. Carlos*
Affiliation:
Departamento de Física, Universidade de Évora, 7001 Évora Codex, and Centre for Microsystems, Instituto Superior Técnico, 1096 Lisboa, Portugal
M. Assunção
Affiliation:
Departamento de Física, Universidade de Aveiro, 3800 Aveiro, Portugal
L. Alcácer
Affiliation:
Departamento de Química, Institute Superior Técnico, 1096 Lisboa, and Centre for Microsystems, Instituto Superior Técnico, 1096 Lisboa, Portugal
*
a)Address correspondence to this author.
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Abstract

The excitation and emission spectra of polymeric matrices—poly(ethylene oxide), PEO, and poly(propylene oxide), PPO—containing different concentrations of EuBr3 were recorded and most of the observed transitions identified. The Stark components of the 7F0−4, 5D0 levels and the corresponding barycenters were calculated based on the emission lines assignment to the 5D0,1 → 7F0−4 transitions. The spectra were discussed in terms of a C2v local Eu3+ coordination. The relative intensity of the 5D0 → 7F2 hypersensitive transition was related to the electrolyte morphological changes due to increasing europium concentration.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 1 , January 1995 , pp. 202 - 210
Copyright
Copyright © Materials Research Society 1995

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