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Nanostructure investigation of Eu3+-containing porous silica glasses

Influence of pore size and sintering conditions
: Pablos-Martin, A. de; Oberleiter, B.; Thieme, C.; Rainer, T.; Höche, T.


Ceramics international : CI 44 (2018), No.12, pp.14625-14630
ISSN: 0272-8842
Journal Article
Fraunhofer IMWS ()

Porous silica glasses of different porous sizes are used as hosts for Eu3+-ions from a Eu(NO3)3 solution. The glasses were subjected to a sintering process in which the porous microstructure collapses. This work is dedicated to the study of the microstructure of sintered glasses containing Eu3+ ions, through (scanning) transmission electron microscopy ((S)TEM), energy-dispersive X-ray spectroscopy (EDXS), and X-ray diffraction (XRD). The microstructure achieved is strongly dependent on the pore size, heating rate, and sintering temperature. Eu3+ ions are localized in particles growing in the pores during the sintering.