Making Graphene Luminescent
T. Gokus, R.R. Nair, A.Bonetti, M. Bohmler, A. Lombardo, K. S., Novoselov, A.K. Geim, A. C. Ferrari, A. Hartschuh
TL;DR
This paper demonstrates that oxygen plasma treatment induces strong, uniform photoluminescence in single-layer graphene, enabling selective modification of multilayer samples and revealing new optical properties.
Contribution
It introduces a method to induce and control photoluminescence in graphene using oxygen plasma, a novel approach for optical property engineering.
Findings
PL is spatially uniform across graphene flakes
PL characteristics differ from pristine graphene
Oxygen plasma can selectively treat multilayer graphene
Abstract
We show that strong photoluminescence (PL) can be induced in single-layer graphene on using an oxygen plasma treatment. PL characteristics are spatially uniform across the flakes and connected to elastic scattering spectra distinctly different from those of gapless pristine graphene. Oxygen plasma can be used to selectively convert the topmost layer when multi-layer samples are treated
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Taxonomy
TopicsGraphene research and applications · 2D Materials and Applications · Silicon Nanostructures and Photoluminescence