منابع مشابه
Reversible optical doping of graphene
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 SiO2/Si substrate can be finely and reversibly tuned between hole and electron doping with visible photons. This photo-induced doping ...
متن کاملReversible optical doping of graphene [1]
The ultimate surface exposure provided by graphene makes it the ideal sensor platform but also exposes its intrinsic properties to any environmental perturbations. Raman spectroscopy has been used here to demonstrate the influence of the laser power and the surface chemistry of the SiO2/Si substrate on the charge carrier density of exfoliated graphene in air. Raman spectroscopy is being conside...
متن کاملOptical separation of mechanical strain from charge doping in graphene.
Because of its superior stretchability, graphene exhibits rich structural deformation behaviours and its strain engineering has proven useful in modifying its electronic and magnetic properties. Despite the strain-sensitivity of the Raman G and 2D modes, the optical characterization of the native strain in graphene on silica substrates has been hampered by excess charges interfering with both m...
متن کاملMolecular doping of graphene.
Graphene is considered as one of the most promising materials for post silicon electronics, as it combines high electron mobility with atomic thickness [Novoselov et al. Science 2004, 306, 666-669. Novoselov et al. Proc. Natl. Acad. Sci. U.S.A. 2005, 102, 10451-10453]. The possibility of chemical doping and related excellent chemical sensor properties of graphene have been demonstrated experime...
متن کاملGraphene Doping: A Review
Graphene, a new material for the electron-device community, has many extraordinary properties. Especially, it provides a perfect platform to explore the unique electronic property in absolutely two-dimensions. However, most electronic applications are handicapped by the absence of a semiconducting gap in pristine graphene. To control the semiconducting properties of graphene, doping is regarded...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2013
ISSN: 2045-2322
DOI: 10.1038/srep02355