Unknown

Dataset Information

0

Charge transport mechanism in networks of armchair graphene nanoribbons.


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.

SUBMITTER: Richter N 

PROVIDER: S-EPMC7005326 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

altmetric image

Publications

Charge transport mechanism in networks of armchair graphene nanoribbons.

Richter Nils N   Chen Zongping Z   Tries Alexander A   Prechtl Thorsten T   Narita Akimitsu A   Müllen Klaus K   Asadi Kamal K   Bonn Mischa M   Kläui Mathias M  

Scientific reports 20200206 1


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  ...[more]

Similar Datasets

| S-EPMC4682157 | biostudies-literature
| S-EPMC4918381 | biostudies-literature
| S-EPMC5562773 | biostudies-other
| S-EPMC3523290 | biostudies-literature
| S-EPMC10485924 | biostudies-literature
| S-EPMC5860786 | biostudies-literature
| S-EPMC5924368 | biostudies-literature
| S-EPMC7582623 | biostudies-literature
| S-EPMC5789393 | biostudies-literature
| S-EPMC6643467 | biostudies-literature