volume 18, issue 1-2, P255-258 2001
DOI: 10.1016/s0928-4931(01)00370-8
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Kris Driesen, Christiane Görller-Walrand, Koen Binnemans

Abstract: w Ž. x Ž X. Lanthanide complexes Ln bpy Cl bpy s bipyridyl, 2,2-bipyridine; Ln s Nd, Ho, Er were incorporated via a sol-gel process into 2 3 a silicate glass. Optical absorption spectra of the monolithic glass samples have been recorded. The data were interpreted using the Judd-Ofelt theory. It was found that heat treatment of the glass samples results in a marked increase of the intensity of the hypersensitive transitions, whereas the intensity of the other f-f transitions decreases slightly. These difference…

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