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Gokus, Tobias; Nair, R. R.; Bonetti, A.; Böhmler, Miriam; Lombardo, A.; Novoselov, K. S.; Geim, A. K.; Ferrari, A. C.; Hartschuh, Achim (2009): Making Graphene Luminescent by Oxygen Plasma Treatment. In: ACS Nano, Vol. 3, No. 12: pp. 3963-3968




We show that strong photoluminescence (PL) can be induced in single-layer graphene using an oxygen plasma treatment. The PL is 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 multilayer samples are treated.