Toward Optimized Charge Transport in Multilayer Reduced Graphene Oxides
Journal article, 2022
In the context of graphene-based composite applications, a complete understanding of charge conduction in multilayer reduced graphene oxides (rGO) is highly desirable. However, these rGO compounds are characterized by multiple and different sources of disorder depending on the chemical method used for their synthesis. Most importantly, the precise role of interlayer interaction in promoting or jeopardizing electronic flow remains unclear. Here, thanks to the development of a multiscale computational approach combining first-principles calculations with large-scale transport simulations, the transport scaling laws in multilayer rGO are unraveled, explaining why diffusion worsens with increasing film thickness. In contrast, contacted films are found to exhibit an opposite trend when the mean free path becomes shorter than the channel length, since conduction becomes predominantly driven by interlayer hopping. These predictions are favorably compared with experimental data and open a road toward the optimization of graphene-based composites with improved electrical conduction.
multilayer transport scaling law
reduced graphene oxides
charge transport
interlayer transport
quantum transport
disordered van der Waals thin films
Author
Mustafa Neşet Çlnar
İzmir Institute of Technology (IZ -TECH)
Aleandro Antidormi
Institut Catala de Nanociencia i Nanotecnologia
Viet Hung Nguyen
Universite catholique de Louvain
Alessandro Kovtun
Institute for organic syntheses and photoreactivity (ISOF-CNR)
Samuel Lara Avila
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
A. Liscio
Consiglo Nazionale Delle Richerche
Jean-Christophe Charlier
Universite catholique de Louvain
Stephan Roche
Institut Catala de Nanociencia i Nanotecnologia
Catalan Institution for Research and Advanced Studies
Hâldun Sevinçli
İzmir Institute of Technology (IZ -TECH)
Nano Letters
1530-6984 (ISSN) 1530-6992 (eISSN)
Vol. 22 6 2202-2208Graphene Core Project 3 (Graphene Flagship)
European Commission (EC) (EC/H2020/881603), 2020-04-01 -- 2023-03-31.
Subject Categories
Materials Chemistry
Other Materials Engineering
Condensed Matter Physics
DOI
10.1021/acs.nanolett.1c03883
PubMed
35230103