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Chemical Doping and Electron−Hole Conduction Asymmetry in Graphene Devices

Open access
Farmer, Damon B., Golizadeh-Mojarad, Roksana, Perebeinos, Vasili, Lin, Yu-Ming, Tulevski, George S., Tsang, James C., Avouris, Phaedon·2009·Nano Letters

Abstract

We investigate poly(ethylene imine) and diazonium salts as stable, complementary dopants on graphene. Transport in graphene devices doped with these molecules exhibits asymmetry in electron and hole conductance. The conductance of one carrier is preserved, while the conductance of the other carrier decreases. Simulations based on nonequilibrium Green's function formalism suggest that the origin of this asymmetry is imbalanced carrier injection from the graphene electrodes caused by misalignment of the electrode and channel neutrality points.

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Metadata

Authors
Farmer, D. B., Golizadeh-Mojarad, R., Perebeinos, V., Lin, Y.-M., Tulevski, G. S., Tsang, J. C., & Avouris, P.
Venue
Nano Letters
Published
2009-01-14
Volume
9
Issue
1
Pages
388-392
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W1977447550
Cited by
483
References
0
FWCI
15.49
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Chemical Doping and Electron−Hole Conduction Asymmetry in Graphene Devices. https://app.cochat.ai/papers/10.1021/nl803214a
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Farmer, D. B., Golizadeh-Mojarad, R., Perebeinos, V., Lin, Y.-M., Tulevski, G. S., Tsang, J. C., & Avouris, P. (2009). Chemical Doping and Electron−Hole Conduction Asymmetry in Graphene Devices. Nano Letters. https://doi.org/10.1021/nl803214a

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.