Home > Research > Publications & Outputs > Robust graphene-based molecular devices

Associated organisational unit

Electronic data

  • robust manuscript

    Accepted author manuscript, 16.1 MB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

Links

Text available via DOI:

View graph of relations

Robust graphene-based molecular devices

Research output: Contribution to journalJournal article

Published
  • M. El Abbassi
  • S. Sangtarash
  • X. Liu
  • M.L. Perrin
  • O. Braun
  • C. Lambert
  • H.S.J. van der Zant
  • S. Yitzchaik
  • S. Decurtins
  • S.-X. Liu
  • H. Sadeghi
  • M. Calame
Close
<mark>Journal publication date</mark>1/10/2019
<mark>Journal</mark>Nature Nanotechnology
Issue number10
Volume14
Number of pages5
Pages (from-to)957-961
Publication statusPublished
Early online date16/09/19
Original languageEnglish

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 temperature1,2. This is crucial because structural and electronic fluctuations can lead to significant changes in the transport characteristics at the electrode-molecule interface3,4. 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.