Correlation between structure and electrical transport in ion-irradiated graphene grown on Cu foils
- Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
- Naval Research Laboratory, Washington, D.C. 20375 (United States)
Graphene grown by chemical vapor deposition and supported on SiO{sub 2} and sapphire substrates was studied following the controlled introduction of defects induced by 35 keV carbon ion irradiation. Changes in Raman spectra for fluences ranging from 10{sup 12} to 10{sup 15} cm{sup -2} indicate that the structure of graphene evolves from a highly ordered layer, to a patchwork of disordered domains, to an essentially amorphous film. These structural changes result in a dramatic decrease in the Hall mobility by orders of magnitude while, remarkably, the Hall concentration remains almost unchanged, suggesting that the Fermi level is pinned at a hole concentration near 1x10{sup 13} cm{sup -2}. A model for scattering by resonant scatterers is in good agreement with mobility measurements up to an ion fluence of 1x10{sup 14} cm{sup -2}.
- OSTI ID:
- 21518254
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 3 Vol. 98; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BEAMS
CARBON IONS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
CORRELATIONS
CORUNDUM
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DEPOSITION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
ENERGY RANGE
FERMI LEVEL
FOILS
HOLE MOBILITY
HONEYCOMB STRUCTURES
ION BEAMS
IONS
IRRADIATION
KEV RANGE
KEV RANGE 10-100
LAYERS
MECHANICAL STRUCTURES
MINERALS
MOBILITY
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RAMAN SPECTRA
SAPPHIRE
SCATTERING
SILICON COMPOUNDS
SILICON OXIDES
SPECTRA
SUBSTRATES
SURFACE COATING
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BEAMS
CARBON IONS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
CORRELATIONS
CORUNDUM
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DEPOSITION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
ENERGY RANGE
FERMI LEVEL
FOILS
HOLE MOBILITY
HONEYCOMB STRUCTURES
ION BEAMS
IONS
IRRADIATION
KEV RANGE
KEV RANGE 10-100
LAYERS
MECHANICAL STRUCTURES
MINERALS
MOBILITY
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RAMAN SPECTRA
SAPPHIRE
SCATTERING
SILICON COMPOUNDS
SILICON OXIDES
SPECTRA
SUBSTRATES
SURFACE COATING