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Cited by 385

The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.

Enhancement of the Electrical Properties of Graphene Grown by Chemical Vapor Deposition via Controlling the Effects of Polymer Residue

Suk, Ji Won, Lee, Wi Hyoung, Lee, Jongho, Chou, Harry, Piner, Richard D., Hao, Yufeng, Akinwande, Deji, Ruoff, Rodney S.·2013·Nano Letters

Abstract

Residual polymer (here, poly(methyl methacrylate), PMMA) left on graphene from transfer from metals or device fabrication processes affects its electrical and thermal properties. We have found that the amount of polymer residue left after the transfer of chemical vapor deposited (CVD) graphene varies depending on the initial concentration of the polymer solution, and this residue influences the electrical performance of graphene field-effect transistors fabricated on SiO2/Si. A PMMA solution with lower concentration gave less residue after exposure to acetone, resulting in less p-type doping in graphene and higher charge carrier mobility. The electrical properties of the weakly p-doped graphene could be further enhanced by exposure to formamide with the Dirac point at nearly zero gate voltage and a more than 50% increase of the room-temperature charge carrier mobility in air. This can be attributed to electron donation to graphene by the -NH2 functional group in formamide that is absorbed in the polymer residue. This work provides a route to enhancing the electrical properties of CVD-grown graphene even when it has a thin polymer coating.

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Metadata

Authors
Suk, J. W., Lee, W. H., Lee, J., Chou, H., Piner, R. D., Hao, Y., Akinwande, D., & Ruoff, R. S.
Venue
Nano Letters
Published
2013-03-19
Volume
13
Issue
4
Pages
1462-1467
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W1971608041
Cited by
385
References
42
FWCI
17.76
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Enhancement of the Electrical Properties of Graphene Grown by Chemical Vapor Deposition via Controlling the Effects of Polymer Residue. https://app.cochat.ai/papers/10.1021/nl304420b
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Suk, J. W., Lee, W. H., Lee, J., Chou, H., Piner, R. D., Hao, Y., Akinwande, D., & Ruoff, R. S. (2013). Enhancement of the Electrical Properties of Graphene Grown by Chemical Vapor Deposition via Controlling the Effects of Polymer Residue. Nano Letters. https://doi.org/10.1021/nl304420b

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