Issue 7, 2020

Customizing the reduction of individual graphene oxide flakes for precise work function tuning with meV precision

Abstract

Being able to precisely control the reduction of two-dimensional graphene oxide films will open exciting opportunities for tailor-making the functionality of nanodevices with on-demand properties. Here we report the meticulously controlled reduction of individual graphene oxide flakes ranging from single to seven layers through controlled laser irradiation. It is found that the reduction can be customized in such a precise way that the film thickness can be accurately thinned with sub-nanometer resolution, facilitated by extraordinary temperature gradients >102 K nm−1 across the interlayers of graphene oxide films. Such precisely controlled reduction provides important pathways towards precision nanotechnology with custom-designed electrical, thermal, optical and chemical properties. We demonstrate that this can be exploited to fine tune the work function of graphene oxide films with unprecedented precision of only a few milli electronvolts.

Graphical abstract: Customizing the reduction of individual graphene oxide flakes for precise work function tuning with meV precision

Supplementary files

Article information

Article type
Communication
Submitted
24 apr 2020
Accepted
27 may 2020
First published
01 iyn 2020
This article is Open Access
Creative Commons BY license

Nanoscale Adv., 2020,2, 2738-2744

Customizing the reduction of individual graphene oxide flakes for precise work function tuning with meV precision

Y. Huang, D. Ma, P. Turner, G. E. Donnelly, J. M. Katzen, W. R. Hendren, J. M. Gregg, R. M. Bowman, L. Zhang, G. Zhang and F. Huang, Nanoscale Adv., 2020, 2, 2738 DOI: 10.1039/D0NA00321B

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