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Tunable hot-electron transfer within a single core-shell nanowire
Journal article   Open access   Peer reviewed

Tunable hot-electron transfer within a single core-shell nanowire

Guannan Chen, Eric M Gallo, Oren D Leaffer, Terrence McGuckin, Paola Prete, Nico Lovergine and Jonathan E Spanier
Physical review letters, v 107(15), pp 156802-156802
07 Oct 2011
DOI: https://doi.org/10.1103/PhysRevLett.107.156802
PMID: 22107312
Featured in Collection :   UN Sustainable Development Goals @ Drexel
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https://doi.org/10.1103/PhysRevLett.107.156802View
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Abstract

We report the hot photoexcited electron transfer across the coaxial interface of a cylindrical core-shell nanowire. Modulation of the transfer rates, manifested as a large tunability of the voltage onset of negative differential resistance and of voltage-current phase, is achieved using three different modes. The coupling of electrostatic gating, incident photon energy, and the incident photon intensity to transfer rates is facilitated by the combined influences of geometric confinement and heterojunction shape on hot-electron transfer, and by electron-electron scattering rates that can be altered by varying the incident photon flux, with evidence of weak electron-phonon scattering. Dynamic manipulation of this transfer rate permits the introduction and control of a continuously adjustable phase delay of up to ∼130° within a single nanometer-scale device element.

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10 citations in Web of Science
10 citations in Scopus

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UN Sustainable Development Goals (SDGs)

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#7 Affordable and Clean Energy

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Physics, Multidisciplinary
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