Toward optimized charge transport in multilayer reduced graphene oxides
Çınar, Mustafa Neşet (Izmir Institute of Technology)
Antidormi, Aleandro (Institut Català de Nanociència i Nanotecnologia)
Nguyen, Viet-Hung (Université catholique de Louvain. Institute of Condensed Matter and Nanosciences)
Kovtun, Alessandro (Istituto per la Sintesi Organica e la Fotoreattivitá)
Lara-Avila, Samuel (Chalmers University of Technology. Department of Microtechnology and Nanoscience)
Liscio, Andrea (Istituto per la Microelettronica e Microsistemi)
Charlier, Jean Christophe (Université catholique de Louvain. Institute of Condensed Matter and Nanosciences)
Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
Sevinçli, Hâldun (Izmir Institute of Technology. Department of Materials Science and Engineering)

Data:	2022
Resum:	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.
Ajuts:	European Commission 881603 Ministerio de Ciencia e Innovación PCI2018-093120 Ministerio de Economía y Competitividad SEV-2017-0706
Nota:	Altres ajuts: ICN2 is funded by the CERCA Programme/Generalitat de Catalunya.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Disordered van der Waals thin films ; Reduced graphene oxides ; Charge transport ; Quantum transport ; Interlayer transport ; Multilayer transport scaling law
Publicat a:	Nano letters, Vol. 22, issue 3 (March 2022) , p. 2202-2208, ISSN 1530-6992

DOI: 10.1021/acs.nanolett.1c03883
PMID: 35230103

7 p, 3.3 MB

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