Reversible optical doping of graphene

75Citations
Citations of this article
133Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

The ultimate surface exposure provided by graphene monolayer makes it the ideal sensor platform but also exposes its intrinsic properties to any environmental perturbations. In this work, we demonstrate that the charge carrier density of graphene exfoliated on a SiO 2/Si substrate can be finely and reversibly tuned between hole and electron doping with visible photons. This photo-induced doping happens under moderate laser power conditions but is significantly affected by the substrate cleaning method. In particular, it requires hydrophilic substrates and vanishes for suspended graphene. These findings suggest that optically gated graphene devices operating with a sub-second time scale can be envisioned and that Raman spectroscopy is not always as non-invasive as generally assumed.

Cite

CITATION STYLE

APA

Tiberj, A., Rubio-Roy, M., Paillet, M., Huntzinger, J. R., Landois, P., Mikolasek, M., … Zahab, A. A. (2013). Reversible optical doping of graphene. Scientific Reports, 3. https://doi.org/10.1038/srep02355

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free