Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-5142
Authors: | Richter, Nils Chen, Zongping Tries, Alexander Prechtl, Thorsten Narita, Akimitsu Müllen, Klaus Asadi, Kamal Bonn, Mischa Kläui, Mathias |
Title: | Charge transport mechanism in networks of armchair graphene nanoribbons |
Online publication date: | 28-Oct-2020 |
Year of first publication: | 2020 |
Language: | english |
Abstract: | In graphene nanoribbons (GNRs), the lateral confinement of charge carriers opens a band gap, the key feature that enables novel graphene-based electronics. Despite great progress, reliable and reproducible fabrication of single-ribbon field-effect transistors (FETs) is still a challenge, impeding the understanding of the charge transport. Here, we present reproducible fabrication of armchair GNR-FETs based on networks of nanoribbons and analyze the charge transport mechanism using nine-atom wide and, in particular, five-atom-wide GNRs with large conductivity. We show formation of reliable Ohmic contacts and a yield of functional FETs close to unity by lamination of GNRs to electrodes. Modeling the charge transport in the networks reveals that transport is governed by inter-ribbon hopping mediated by nuclear tunneling, with a hopping length comparable to the physical GNR length. Overcoming the challenge of low-yield single-ribbon transistors by the networks and identifying the corresponding charge transport mechanism is a key step forward for functionalization of GNRs. |
DDC: | 530 Physik 530 Physics |
Institution: | Johannes Gutenberg-Universität Mainz |
Department: | FB 08 Physik, Mathematik u. Informatik |
Place: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-5142 |
Version: | Published version |
Publication type: | Zeitschriftenaufsatz |
License: | CC BY |
Information on rights of use: | https://creativecommons.org/licenses/by/4.0/ |
Journal: | Scientific reports 10 |
Pages or article number: | Art. 1988 |
Publisher: | Macmillan Publishers Limited, part of Springer Nature |
Publisher place: | London |
Issue date: | 2020 |
ISSN: | 2045-2322 |
Publisher URL: | https://www.doi.org/10.1038/s41598-020-58660-w |
Publisher DOI: | 10.1038/s41598-020-58660-w |
Appears in collections: | JGU-Publikationen |
Files in This Item:
File | Description | Size | Format | ||
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richter_nils-charge_transpo-20201023125955242.pdf | 2.09 MB | Adobe PDF | View/Open |