Silica nanoparticles were produced from germanosilicate glasses by KrF laser irradiation. The samples were investigated by cathodoluminescence and scanning electron microscopy, providing the presence of nanoparticles with size from tens up to hundreds of nanometers. The emission of the Germanium lone pair center is preserved in the nanoparticles and atomic force microscopy revealed the presence of no spherical particles with a size smaller than ~4 nm. The absorption coefficient enhancement induced by Ge doping is reputed fundamental to facilitate the nanoparticles production. This procedure can be applied to other co-doped silica materials to tune the nanoparticles features.

Alessi, A., Fanetti, M., Agnello, S., Girard, S., Buscarino, G., Di Francesca, D., et al. (2016). Ge-doped silica nanoparticles: production and characterisation. OPTICAL MATERIALS EXPRESS, 6(7), 2213-2220 [10.1364/OME.6.002213].

Ge-doped silica nanoparticles: production and characterisation

ALESSI, Antonino;AGNELLO, Simonpietro;BUSCARINO, Gianpiero;DI FRANCESCA, Diego;MESSINA, Fabrizio;CANNAS, Marco;
2016

Abstract

Silica nanoparticles were produced from germanosilicate glasses by KrF laser irradiation. The samples were investigated by cathodoluminescence and scanning electron microscopy, providing the presence of nanoparticles with size from tens up to hundreds of nanometers. The emission of the Germanium lone pair center is preserved in the nanoparticles and atomic force microscopy revealed the presence of no spherical particles with a size smaller than ~4 nm. The absorption coefficient enhancement induced by Ge doping is reputed fundamental to facilitate the nanoparticles production. This procedure can be applied to other co-doped silica materials to tune the nanoparticles features.
Settore FIS/01 - Fisica Sperimentale
Alessi, A., Fanetti, M., Agnello, S., Girard, S., Buscarino, G., Di Francesca, D., et al. (2016). Ge-doped silica nanoparticles: production and characterisation. OPTICAL MATERIALS EXPRESS, 6(7), 2213-2220 [10.1364/OME.6.002213].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/216585
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