The absorption and emission spectra of silicon nanocrystals up to 1 nm diameter have been calculated within a first-principles framework. Our calculations include geometry optimization and the many-body effects induced by the creation of an electron-hole pair. Starting from hydrogenated silicon clusters of different sizes, different Si/O bondings at the cluster surface have been considered. We found that the presence of a Si-O-Si bridge bond causes significant excitonic luminescence features in the visible range that are in fair agreement with experiment.

Luppi, E., Iori, F., Magri, R., Pulci, O., Ossicini, S., Degoli, E., et al. (2007). Excitons in silicon nanocrystallites: The nature of luminescence. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 75(3) [10.1103/PhysRevB.75.033303].

Excitons in silicon nanocrystallites: The nature of luminescence

PULCI, OLIVIA;
2007-01-01

Abstract

The absorption and emission spectra of silicon nanocrystals up to 1 nm diameter have been calculated within a first-principles framework. Our calculations include geometry optimization and the many-body effects induced by the creation of an electron-hole pair. Starting from hydrogenated silicon clusters of different sizes, different Si/O bondings at the cluster surface have been considered. We found that the presence of a Si-O-Si bridge bond causes significant excitonic luminescence features in the visible range that are in fair agreement with experiment.
2007
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - FISICA DELLA MATERIA
English
Luppi, E., Iori, F., Magri, R., Pulci, O., Ossicini, S., Degoli, E., et al. (2007). Excitons in silicon nanocrystallites: The nature of luminescence. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 75(3) [10.1103/PhysRevB.75.033303].
Luppi, E; Iori, F; Magri, R; Pulci, O; Ossicini, S; Degoli, E; Olevano, V
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/114820
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 62
  • ???jsp.display-item.citation.isi??? 51
social impact