The relaxation dynamics of unaligned multi-walled carbon nanotubes decorated with metallic nanoparticles have been studied by using transient optical measurements. The fast dynamics due to the short-lived free-charge carriers excited by the pump are not affected by the presence of nanoparticles. Conversely, a second long dynamics, absent in bare carbon nanotubes, appears only in the decorated samples. A combination of experiment and theory allows us to ascribe this long dynamics to relaxation channels involving electronic states localized at the tube-nanoparticle interface.
Manzoni, G., Ponzoni, S., Galimberti, G., Scarselli, M.a., Pulci, O., Camilli, L., et al. (2016). Ultrafast dynamics in unaligned MWCNTs decorated with metal nanoparticles. NANOTECHNOLOGY, 27(23), 235704 [10.1088/0957-4484/27/23/235704].
Ultrafast dynamics in unaligned MWCNTs decorated with metal nanoparticles
SCARSELLI, MANUELA ANGELA;PULCI, OLIVIA;CAMILLI, LUCA;CASTRUCCI, PAOLA;
2016-05-01
Abstract
The relaxation dynamics of unaligned multi-walled carbon nanotubes decorated with metallic nanoparticles have been studied by using transient optical measurements. The fast dynamics due to the short-lived free-charge carriers excited by the pump are not affected by the presence of nanoparticles. Conversely, a second long dynamics, absent in bare carbon nanotubes, appears only in the decorated samples. A combination of experiment and theory allows us to ascribe this long dynamics to relaxation channels involving electronic states localized at the tube-nanoparticle interface.| File | Dimensione | Formato | |
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