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:(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
2016-01-01

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.
4-apr-2016
27
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:(2016), pp. N/A-N/A. [10.1088/0957-4484/27/19/195201]
Buscemi, Fabrizio; Royo, Miquel; Goldoni, Guido; Bertoni, Andrea
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1102086
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