We show here what kind of modification of the interphase morphology of SnO2 nanoparticles in silica (average nanocrystal radius, r=4nm in undoped material; r=2 nm in erbium doped material) brings to the passivation of interfacial defects. Surface states, which may preclude the exploitation of UV excitonic emission, are reduced after doping by rare earth ions. We demonstrate, by means of transmission-electron-microscopy and small-angleneutron-scattering data, that a smooth interphase with a non negligible thickness takes the place of the fractal and discontinuous boundary observed in undoped material

Brovelli, S., Chiodini, N., Lauria, A., Paleari, A. (2008). Erbium-induced blurring of the fractal surface of SnO2 nanocrystals grown in silica. JOURNAL OF NANOPARTICLE RESEARCH, 10(5), 737-743 [10.1007/s11051-007-9302-y].

Erbium-induced blurring of the fractal surface of SnO2 nanocrystals grown in silica

BROVELLI, SERGIO;CHIODINI, NORBERTO;LAURIA, ALESSANDRO;PALEARI, ALBERTO MARIA FELICE
2008

Abstract

We show here what kind of modification of the interphase morphology of SnO2 nanoparticles in silica (average nanocrystal radius, r=4nm in undoped material; r=2 nm in erbium doped material) brings to the passivation of interfacial defects. Surface states, which may preclude the exploitation of UV excitonic emission, are reduced after doping by rare earth ions. We demonstrate, by means of transmission-electron-microscopy and small-angleneutron-scattering data, that a smooth interphase with a non negligible thickness takes the place of the fractal and discontinuous boundary observed in undoped material
Articolo in rivista - Articolo scientifico
nanoparticles, small-angle neutron scattering, rbium doping, transmission microscopy, sol–gel, silica
English
737
743
7
Brovelli, S., Chiodini, N., Lauria, A., Paleari, A. (2008). Erbium-induced blurring of the fractal surface of SnO2 nanocrystals grown in silica. JOURNAL OF NANOPARTICLE RESEARCH, 10(5), 737-743 [10.1007/s11051-007-9302-y].
Brovelli, S; Chiodini, N; Lauria, A; Paleari, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/6384
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