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Robust graphene-based molecular devices

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El Abbassi, Maria, Sangtarash, Sara, Liu, Xunshan, Perrin, Mickael Lucien, Braun, Oliver, Lambert, Colin, van der Zant, Herre Sjoerd Jan, Yitzchaik, Shlomo, Decurtins, Silvio, Liu, Shi-Xia, Sadeghi, Hatef and Calame, Michel (2019) Robust graphene-based molecular devices. Nature Nanotechnology, 14 . pp. 957-961. doi:10.1038/s41565-019-0533-8 ISSN 1748-3387.

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Official URL: https://doi.org/10.1038/s41565-019-0533-8

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Abstract

One of the main challenges to upscale the fabrication of molecular devices is to achieve a mechanically stable device with reproducible and controllable electronic features that operates at room temperature . This is crucial because structural and electronic fluctuations can lead to significant changes in the transport characteristics at the electrode-molecule interface . In this study, we report on the realization of a mechanically and electronically robust graphene-based molecular junction. Robustness was achieved by separating the requirements for mechanical and electronic stability at the molecular level. Mechanical stability was obtained by anchoring molecules directly to the substrate, rather than to graphene electrodes, using a silanization reaction. Electronic stability was achieved by adjusting the π-π orbitals overlap of the conjugated head groups between neighbouring molecules. The molecular devices exhibited stable current-voltage (I-V) characteristics up to bias voltages of 2.0 V with reproducible transport features in the temperature range from 20 to 300 K.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Graphene -- Electric properties, Molecular electronics, Cell junctions, Electrodes
Journal or Publication Title: Nature Nanotechnology
Publisher: Nature Publishing Group
ISSN: 1748-3387
Official Date: 16 September 2019
Dates:
DateEvent
16 September 2019Published
22 July 2019Accepted
Volume: 14
Page Range: pp. 957-961
DOI: 10.1038/s41565-019-0533-8
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 24 February 2020
Date of first compliant Open Access: 24 February 2020
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
606728Seventh Framework Programmehttp://dx.doi.org/10.13039/100011102
767187H2020 Future and Emerging Technologieshttp://dx.doi.org/10.13039/100010664
EP/M014452/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
EP/N017188/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
Advanced GrantEuropean Research Councilhttp://dx.doi.org/10.13039/501100000781
MR/S015329/1UK Research and Innovationhttp://dx.doi.org/10.13039/100014013
ECF-2017-186Leverhulme Trusthttp://dx.doi.org/10.13039/501100000275

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