Ontology highlight
ABSTRACT:
SUBMITTER: Lee D
PROVIDER: S-EPMC3718196 | biostudies-literature | 2013
REPOSITORIES: biostudies-literature
Scientific reports 20130101
Graphene oxide has recently been considered to be a potential replacement for cadmium-based quantum dots due to its expected high fluorescence. Although previously reported, the origin of the luminescence in graphene oxide is still controversial. Here, we report the presence of core/valence excitons in graphene-based materials, a basic ingredient for optical devices, induced by quantum confinement. Electron confinement in the unreacted graphitic regions of graphene oxide was probed by high resol ...[more]