First-principles calculations on the structural, electronic, and optical properties of B-P codoped SiGe core-shell nanowires are discussed. We show that the simultaneous addition of B and P impurities into the wire can be energetically favored with respect to the single-doping. We demonstrate that impurities energetic levels in the band gap are dependent by the Si/Ge band offset, as well as by their location in the wire (i.e., core or shell region). This electronic tunability results in a significant optical modulation, as demonstrated by the red-shift of the first optical peak when B and P locations are switched in the wire

Amato, M., Palummo, M., Rurali, R., Ossicini, S. (2012). Optical absorption modulation by selective codoping of SiGe core-shell nanowires. JOURNAL OF APPLIED PHYSICS, 112(11) [10.1063/1.4768475].

Optical absorption modulation by selective codoping of SiGe core-shell nanowires

PALUMMO, MAURIZIA;
2012-12-01

Abstract

First-principles calculations on the structural, electronic, and optical properties of B-P codoped SiGe core-shell nanowires are discussed. We show that the simultaneous addition of B and P impurities into the wire can be energetically favored with respect to the single-doping. We demonstrate that impurities energetic levels in the band gap are dependent by the Si/Ge band offset, as well as by their location in the wire (i.e., core or shell region). This electronic tunability results in a significant optical modulation, as demonstrated by the red-shift of the first optical peak when B and P locations are switched in the wire
dic-2012
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - FISICA DELLA MATERIA
English
Con Impact Factor ISI
Amato, M., Palummo, M., Rurali, R., Ossicini, S. (2012). Optical absorption modulation by selective codoping of SiGe core-shell nanowires. JOURNAL OF APPLIED PHYSICS, 112(11) [10.1063/1.4768475].
Amato, M; Palummo, M; Rurali, R; Ossicini, S
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/2108/77887
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 10
social impact