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Electrochemical Gate-Controlled Charge Transport in Graphene in Ionic Liquid and Aqueous Solution
Abstract
We have studied the electron transport behavior of electrochemically gated graphene transistors in different solutions. In an ionic liquid, we have determined the electron and hole carrier densities and estimated the concentration of charged impurities to be (1-10) x 10(12) cm(-2). The minimum conductivity displays an exponential decrease with the density of charged impurities, which is attributed to the impurity scattering of the carriers. In aqueous solutions, the position of minimum conductivity shifts negatively as the ionic concentration increases. The dependence of the transport properties on ionic concentration is important for biosensor applications, and the observation is modeled in terms of screening for impurity charges by the ions in solutions.
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Cited by
Nanostructured carbon for energy storage and conversion
Candelaria, S. L., Shao, Y., Zhou, W., Li, X., Xiao, J., Zhang, J.-G., Wang, Y., Liu, J., Li, J., & Cao, G. (2012) · Nano Energy · doi:10.1016/j.nanoen.2011.11.006 · Cited by 975
Self-citationElectrolyte‐Gated Transistors for Organic and Printed Electronics
Kim, S. H., Hong, K., Xie, W., Lee, K. H., Zhang, S., Lodge, T. P., & Frisbie, C. D. (2013) · Advanced Materials · doi:10.1002/adma.201202790 · Cited by 957
Metadata
- Authors
- Chen, F., Qing, Q., Xia, J., Li, J., & Tao, N.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-07-02
- Volume
- 131
- Issue
- 29
- Pages
- 9908-9909
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2070159335
- Cited by
- 268
- References
- 0
- FWCI
- 9.57
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Electrochemical Gate-Controlled Charge Transport in Graphene in Ionic Liquid and Aqueous Solution. https://app.cochat.ai/papers/10.1021/ja9041862
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- Chen, F., Qing, Q., Xia, J., Li, J., & Tao, N. (2009). Electrochemical Gate-Controlled Charge Transport in Graphene in Ionic Liquid and Aqueous Solution. Journal of the American Chemical Society. https://doi.org/10.1021/ja9041862
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