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Title: Charge transfer between carbon nanotubes on surfaces.
Authors: Araujo, Karolline Aparecida de Souza
Barboza, Ana Paula Moreira
Fernandes, Thales Fernando Damasceno
Shadmi, Nitzan
Joselevich, Ernesto
Mazzoni, Mário Sérgio de Carvalho
Neves, Bernardo Ruegger Almeida
Issue Date: 2015
Citation: ARAUJO, K. A. de S. et al. Charge transfer between carbon nanotubes on surfaces. Nanoscale, v. 7, p. 16175-16181, 2015. Disponível em: <!divAbstract>. Acesso em: 16 jan. 2018.
Abstract: The charge transfer between neighboring single-walled carbon nanotubes (SWNTs) on a silicon oxide surface was investigated as a function of both the SWNT nature (metallic or semiconducting) and the anode/cathode distance using scanning probe techniques. Two main mechanisms were observed: a direct electron tunneling described by the typical Fowler–Nordheim model, and indirect electron transfer (hopping) mediated by functional groups on the supporting surface. Both mechanisms depend on the SWNT nature and on the anode/cathode separation: direct electron tunneling dominates the charge transfer process for metallic SWNTs, especially for large distances, while both mechanisms compete with each other for semiconducting SWNTs, prevailing one over the other depending on the anode/cathode separation. These mechanisms may significantly influence the design and operation of SWNT-based electronic devices.
ISSN: 2040-3372
Appears in Collections:DEFIS - Artigos publicados em periódicos

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