We show how a proper radial modulation of the composition of core-multi-shell nanowires (NWs) critically enhances the control of the free-carrier density in the high-mobility core with respect to core-single-shell structures, thus overcoming the technological difficulty of fine tuning the remote doping density. We calculate the electron population of the different NW layers as a function of the doping density and of several geometrical parameters by means of a self-consistent Schrödinger-Poisson approach: free carriers tend to localize in the outer shell and screen the core from the electric field of the dopants.

Tailoring the core electron density in modulation-doped core-multi-shell nanowires / Buscemi, Fabrizio; Royo, Miquel; Goldoni, Guido; Bertoni, Andrea. - In: NANOTECHNOLOGY. - ISSN 0957-4484. - STAMPA. - 27:19(2016), pp. N/A-N/A. [10.1088/0957-4484/27/19/195201]

Tailoring the core electron density in modulation-doped core-multi-shell nanowires

BUSCEMI, Fabrizio;GOLDONI, Guido;BERTONI, Andrea
2016

Abstract

We show how a proper radial modulation of the composition of core-multi-shell nanowires (NWs) critically enhances the control of the free-carrier density in the high-mobility core with respect to core-single-shell structures, thus overcoming the technological difficulty of fine tuning the remote doping density. We calculate the electron population of the different NW layers as a function of the doping density and of several geometrical parameters by means of a self-consistent Schrödinger-Poisson approach: free carriers tend to localize in the outer shell and screen the core from the electric field of the dopants.
2016
4-apr-2016
27
19
N/A
N/A
Tailoring the core electron density in modulation-doped core-multi-shell nanowires / Buscemi, Fabrizio; Royo, Miquel; Goldoni, Guido; Bertoni, Andrea. - In: NANOTECHNOLOGY. - ISSN 0957-4484. - STAMPA. - 27:19(2016), pp. N/A-N/A. [10.1088/0957-4484/27/19/195201]
Buscemi, Fabrizio; Royo, Miquel; Goldoni, Guido; Bertoni, Andrea
File in questo prodotto:
File Dimensione Formato  
nanotechnology_27_195201_2016.pdf

Accesso riservato

Descrizione: articolo principale
Tipologia: Versione pubblicata dall'editore
Dimensione 578.81 kB
Formato Adobe PDF
578.81 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1102086
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 6
social impact