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Single Charge Electronics with Gold Nanoparticles and Organic Monolayers

Published online by Cambridge University Press:  14 April 2016

O. Pluchery
Affiliation:
Institut des NanoSciences de Paris, Université Pierre et Marie Curie, UPMC Univ Paris 06, UMR CNRS 7580, 4 place Jussieu, 75005 Paris, FRANCE
L. Caillard
Affiliation:
Institut des NanoSciences de Paris, Université Pierre et Marie Curie, UPMC Univ Paris 06, UMR CNRS 7580, 4 place Jussieu, 75005 Paris, FRANCE Laboratory for Surface & Nanostructure Modifications, Department of Materials Science and Engineering, University of Texas at Dallas, 800 West Campbell Road, Dallas, Texas 75080, USA
A. Rynder
Affiliation:
Institut des NanoSciences de Paris, Université Pierre et Marie Curie, UPMC Univ Paris 06, UMR CNRS 7580, 4 place Jussieu, 75005 Paris, FRANCE Laboratory for Surface & Nanostructure Modifications, Department of Materials Science and Engineering, University of Texas at Dallas, 800 West Campbell Road, Dallas, Texas 75080, USA
F. Rochet
Affiliation:
Laboratoire de Chimie Physique-Matière et Rayonnement, Université Pierre et Marie Curie, UPMC Univ Paris 06, CNRS UMR 7614, 11 rue Pierre et Marie Curie, 75005 Paris, FRANCE
Y. Zhang
Affiliation:
Lawrence Berkeley National Laboratory, University of California Berkeley, USA
M. Salmeron
Affiliation:
Lawrence Berkeley National Laboratory, University of California Berkeley, USA
Y. J. Chabal
Affiliation:
Laboratory for Surface & Nanostructure Modifications, Department of Materials Science and Engineering, University of Texas at Dallas, 800 West Campbell Road, Dallas, Texas 75080, USA
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Abstract

Gold nanoparticles can be used as ultimate electrical materials for storing electrons or controlling their flow for the next generation nano-electronic devices. These particles are the core element of assemblies where the electrical current is reduced to the smallest possible since electrons are controlled one by one by using the Coulomb blockade phenomenon. We prepared colloidal gold nanoparticles beteween 4 and 15 nm and grafted them on a grafted organic monolayer (GOM) on silicon. GOM are highly ordered monolayers prepared by hydrosilylation of alkene molecules and subsequently modified with an amine group so that gold nanoparticles can be firmly immobilized on top of the layer. We discuss several electrical properties at a single electron level. Using the conductive tip of KPFM, we were also able to reveal the spontaneous charging behavior of the gold nanoparticles so that the local work function of a 10 nm gold nanoparticle is only 3.7 eV. By placing an STM tip above a nanoparticle, Coulomb blockade allows controlling the number of electrons simultaneously injected in the nanoparticle. This opens the way for new kinds of single electron memories or single electron transistors.

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Copyright
Copyright © Materials Research Society 2016 

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