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Probing Charge Transfer at Surfaces Using Graphene Transistors
Abstract
Graphene field effect transistors (FETs) are extremely sensitive to gas exposure. Charge transfer doping of graphene FETs by atmospheric gas is ubiquitous but not yet understood. We have used graphene FETs to probe minute changes in electrochemical potential during high-purity gas exposure experiments. Our study shows quantitatively that electrochemistry involving adsorbed water, graphene, and the substrate is responsible for doping. We not only identify the water/oxygen redox couple as the underlying mechanism but also capture the kinetics of this reaction. The graphene FET is highlighted here as an extremely sensitive potentiometer for probing electrochemical reactions at interfaces, arising from the unique density of states of graphene. This work establishes a fundamental basis on which new electrochemical nanoprobes and gas sensors can be developed with graphene.
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Cited by
Photooxidation and quantum confinement effects in exfoliated black phosphorus
Favron, A., Gaufrès, E., Fossard, F., Phaneuf-L’Heureux, A.-L., Tang, N. Y.-W., Lévesque, P. L., Loiseau, A., Leonelli, R., Francoeur, S., & Martel, R. (2015) · Nature Materials · doi:10.1038/nmat4299 · Cited by 1,376
Self-citationSuk, J. W., Lee, W. H., Lee, J., Chou, H., Piner, R. D., Hao, Y., Akinwande, D., & Ruoff, R. S. (2013) · Nano Letters · doi:10.1021/nl304420b · Cited by 385
Yang, Z., Hao, J., Yuan, S., Lin, S., Yau, H. M., Dai, J., & Lau, S. P. (2015) · Advanced Materials · doi:10.1002/adma.201500990 · Cited by 330
Sherrott, M. C., Hon, P. W. C., Fountaine, K. T., Garcia, J. C., Ponti, S. M., Brar, V. W., Sweatlock, L. A., & Atwater, H. A. (2017) · Nano Letters · doi:10.1021/acs.nanolett.7b00359 · Cited by 320
Three-Dimensional Crumpled Graphene-Based Nanosheets with Ultrahigh NO 2 Gas Sensibility
Chen, Z., Wang, J., Umar, A., Wang, Y., Li, H., & Zhou, G. (2017) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.7b01229 · Cited by 120
Metadata
- Authors
- Levesque, P. L., Sabri, S. S., Aguirre, C. M., Guillemette, J., Siaj, M., Desjardins, P., Szkopek, T., & Martel, R.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-12-09
- Volume
- 11
- Issue
- 1
- Pages
- 132-137
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2037972111
- Cited by
- 328
- References
- 0
- FWCI
- 9.88
- Type
- journal article
- Language
- en
- Open access
- closed
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- Levesque, P. L., Sabri, S. S., Aguirre, C. M., Guillemette, J., Siaj, M., Desjardins, P., Szkopek, T., & Martel, R. (2011). Probing Charge Transfer at Surfaces Using Graphene Transistors. Nano Letters. https://doi.org/10.1021/nl103015w
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