By properly tuning the photon energy of a femtosecond laser pump, we disentangle, in carbon nanotube–Si (CNT/Si) heterojunctions, the fast relaxation dynamics occurring in CNT from the slow repopulation dynamics due to hole charge transfer at the junction. In this way we are able to track the transfer of the photogenerated holes from the Si depletion layer to the CNT layer, under the action of the built-in heterojunction potential. This also clarifies that CNT play an active role in the junction and do not act only as channels for charge collection and transport

Ponzoni, S., Galimberti, G., Sangaletti, L., Castrucci, P., del Gobbo, S., Morbidoni, M., et al. (2014). Selective Optical Switching of Interface-coupled Relaxation Dynamics in Carbon Nanotube-Si Heterojunctions. JOURNAL OF PHYSICAL CHEMISTRY. C, 118, 24110-24116 [10.1021/jp506684b].

Selective Optical Switching of Interface-coupled Relaxation Dynamics in Carbon Nanotube-Si Heterojunctions

CASTRUCCI, PAOLA;SCARSELLI, MANUELA ANGELA;
2014-01-01

Abstract

By properly tuning the photon energy of a femtosecond laser pump, we disentangle, in carbon nanotube–Si (CNT/Si) heterojunctions, the fast relaxation dynamics occurring in CNT from the slow repopulation dynamics due to hole charge transfer at the junction. In this way we are able to track the transfer of the photogenerated holes from the Si depletion layer to the CNT layer, under the action of the built-in heterojunction potential. This also clarifies that CNT play an active role in the junction and do not act only as channels for charge collection and transport
2014
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - FISICA DELLA MATERIA
English
Con Impact Factor ISI
Ponzoni, S., Galimberti, G., Sangaletti, L., Castrucci, P., del Gobbo, S., Morbidoni, M., et al. (2014). Selective Optical Switching of Interface-coupled Relaxation Dynamics in Carbon Nanotube-Si Heterojunctions. JOURNAL OF PHYSICAL CHEMISTRY. C, 118, 24110-24116 [10.1021/jp506684b].
Ponzoni, S; Galimberti, G; Sangaletti, L; Castrucci, P; del Gobbo, S; Morbidoni, M; Scarselli, Ma; Pagliara, S
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/112522
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