The Effect of Hydrogen and Fluorine Coadsorption on the Piezoelectric Properties of Graphene
| Autor: | Evan J. Reed, Mitchell T. Ong, Karel-Alexander N. Duerloo |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Nanoelectromechanical systems
Materials science Hydrogen Graphene chemistry.chemical_element Nanotechnology Piezoelectricity Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Resonator General Energy Adsorption chemistry law Monolayer Density functional theory Physical and Theoretical Chemistry |
| Zdroj: | The Journal of Physical Chemistry C. 117:3615-3620 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp3112759 |
| Popis: | Motivated by a search for electromechanical coupling in monolayer materials, we study graphene chemically modified by hydrogen adsorbed on one side and fluorine adsorbed on the other side. Such adsorption under experimental conditions can potentially lead to a variety of configurations of atoms on the surface. We perform an exhaustive evaluation of candidate configurations for two stoichiometries, C2HF and C4HF, and examine their electromechanical properties using density functional theory. While all configurations exhibit an e31 piezoelectric effect, the lowest energy configuration additionally exhibits an e11 effect. Therefore, both e31 and e11 piezoelectricity can potentially be engineered into nonpiezoelectric monolayer graphene, providing an avenue for monolithic integration of electronic and electromechanical devices in graphene monolayers for resonators, sensors, and nanoelectromechanical systems (NEMS). |
| Databáze: | OpenAIRE |
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