Controlled modulation of electronic properties of graphene by self-assembled monolayers on SiO2 substrates.
basic_science · Level V
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- Record sourced from PubMed, PMID 21291198.
- Also identified by DOI 10.1021/nn1034845.
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Abstract
In this study, with self-assembled monolayers (SAMs) of aminopropyl-, ammoniumpropyl-, butyl-, and 1H,1H,2H,2H-perfluorooctyltriethoxysilanes deposited in-between graphene and the SiO(2) substrate, a controlled doping of graphene was realized with a threshold voltage ranging from -18 to 30 V. In addition, the SAMs are covalently bonded to the SiO(2) surface rather than the graphene surface, thereby producing minimal effects on the mobility of the graphene. Finally, it is more stable than conventional noncovalent dopants.
Medical subject headings
- Electrons
- Graphite
- Silicon Dioxide