Resumen

PEREZ-SALAS, R. et al. Optical vibronic spectra of aggregates in Eu²⁺ -doped KCl and KBr crystals. Rev. mex. fis. [online]. 2003, vol.49, n.2, pp.102-106. ISSN 0035-001X.

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.

Palabras llave : Luminiscence in solids; alkali halides with europium.

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