Optical vibronic spectra of aggregates in Eu2+ -doped KCl and KBr crystals

Optical vibronic spectra of aggregates in Eu2+ -doped KCl and KBr crystals

The vibronic structure on the optical absorption, emission, and excitation spectra of aggregates in Eu2+-doped KCl and KBr crystals has been obtained. The crystals were annealed at 435K. During the aggregation process, four groups of narrow bands were found in KCl:Eu2+ and two, in KBr:Eu2+, which we...

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Veröffentlicht in:Revista mexicana de física 2003-04, Vol.49 (2), p.102-106
Hauptverfasser: Pérez-Salas, R., Piters, T. M., Aceves, R., Rodríguez-Mijangos, R., Barboza-Flores, M.
Format: Artikel
Sprache:eng ; por
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Physics, Multidisciplinary
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Zusammenfassung:The vibronic structure on the optical absorption, emission, and excitation spectra of aggregates in Eu2+-doped KCl and KBr crystals has been obtained. The crystals were annealed at 435K. During the aggregation process, four groups of narrow bands were found in KCl:Eu2+ and two, in KBr:Eu2+, which were considered as the signature of different Eu2+-ion aggregated phases. The vibration frequency for each group is very similar.
ISSN:0035-001X