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Journal articles
Tuning the thickness of electrochemically grafted layers in large area molecular junctions
Abstract : We have investigated the thickness, the morphology and the transport properties of oligo(1-(2-bisthienyl)benzene) (BTB) thin films grafted on evaporated Au electrodes thanks to a diazonium-based electro-reduction process. Atomic force microscope (AFM) measurements reveal that the thickness is accurately controlled by the number of electrochemical cycles in the 2-27 nm range. The thickness displays a linear dependence with the number of cycles followed by a saturation. Ultrathin (2 nm) and thin (27 nm) large area molecular junctions have then been fabricated. The current-voltage characteristics is fully consistent with a tunneling barrier model whereas for thicker molecular films a rectifying behavior is observed.
Cited literature [32 references]
https://hal-univ-paris.archives-ouvertes.fr/hal-01822392
Contributor : Pascal Martin <>
Submitted on : Friday, July 6, 2018 - 2:07:58 PM
Last modification on : Monday, April 5, 2021 - 2:26:11 PM
Long-term archiving on: : Monday, October 1, 2018 - 2:31:04 AM
Contributor : Pascal Martin <>
Submitted on : Friday, July 6, 2018 - 2:07:58 PM
Last modification on : Monday, April 5, 2021 - 2:26:11 PM
Long-term archiving on: : Monday, October 1, 2018 - 2:31:04 AM
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