High-yield parallel fabrication of quantum-dot monolayer single-electron devices displaying Coulomb staircase, contacted by graphene

Joel M. Fruhman (), Hippolyte P.A.G. Astier (), Bruno Ehrler, Marcus L. Böhm, Lissa F. L. Eyre, Piran R. Kidambi, Ugo Sassi, Domenico Fazio, Jonathan P. Griffiths, Alexander J. Robson, Benjamin J. Robinson, Stephan Hofmann, Andrea C. Ferrari and Christopher J. B. Ford ()
Additional contact information
Joel M. Fruhman: Cavendish Laboratory, University of Cambridge
Hippolyte P.A.G. Astier: Cavendish Laboratory, University of Cambridge
Bruno Ehrler: Cavendish Laboratory, University of Cambridge
Marcus L. Böhm: Cavendish Laboratory, University of Cambridge
Lissa F. L. Eyre: Cavendish Laboratory, University of Cambridge
Piran R. Kidambi: University of Cambridge
Ugo Sassi: Cambridge Graphene Centre
Domenico Fazio: Cambridge Graphene Centre
Jonathan P. Griffiths: Cavendish Laboratory, University of Cambridge
Alexander J. Robson: Lancaster University
Benjamin J. Robinson: Lancaster University
Stephan Hofmann: University of Cambridge
Andrea C. Ferrari: Cambridge Graphene Centre
Christopher J. B. Ford: Cavendish Laboratory, University of Cambridge

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract It is challenging for conventional top-down lithography to fabricate reproducible devices very close to atomic dimensions, whereas identical molecules and very similar nanoparticles can be made bottom-up in large quantities, and can be self-assembled on surfaces. The challenge is to fabricate electrical contacts to many such small objects at the same time, so that nanocrystals and molecules can be incorporated into conventional integrated circuits. Here, we report a scalable method for contacting a self-assembled monolayer of nanoparticles with a single layer of graphene. This produces single-electron effects, in the form of a Coulomb staircase, with a yield of 87 ± 13% in device areas ranging from

Date: 2021
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DOI: 10.1038/s41467-021-24233-2

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