Effect of molecular layers on charge transport in nanowires

V. Handziuk, S. Pud, M. Coppola, A. Kisner, S. Vitusevich

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Abstract

Stable ultrathin gold nanowires (Au NWs, 2nm diameter) were produced using wet chemical synthesis, which implied oleylamine molecules, and subsequently assembled onto gold electrodes. Transport properties of fabricated structures were studied using the noise spectroscopy technique. Lorentzian-shaped components were revealed in the noise spectra. The characteristic frequencies of these components were independent of the bias applied, which thus excludes self-heating of the nanowires. Noise peculiarities were shown to be the result of the presence of oleylamine molecules on the NWs. The evidence of oleylamine on the surface of the fabricated structures was confirmed by high-resolution transmission electron microscopy. Organic monolayers can strongly influence charge properties in nanosystems. These results should be taken into account in designing nanowire-based devices for molecular electronics.

Original languageEnglish
Article number012063
JournalJournal of physics: Conference series
Volume864
Issue number1
DOIs
Publication statusPublished - 15 Aug 2017
Externally publishedYes
Event33rd International Conference on the Physics of Semiconductors, ICPS 2016 - Beijing, China
Duration: 31 Jul 20165 Aug 2016

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