Journal
NANO LETTERS
Volume 9, Issue 8, Pages 2973-2977Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl901396g
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- NRI
- Intel
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With the motivation of improving the performance and reliability of aggressively scaled nanopatterned graphene field-effect transistors, we present the first systematic experimental study on charge and current distribution in multilayer graphene field-effect transistors. We find a very particular thickness dependence for I-on, I-off, and the I-on/I-off ratio and propose a resistor network model including screening and interlayer coupling to explain the experimental findings. In particular, our model does not invoke modification of the linear energy-band structure of graphene for the multilayer case. Noise reduction in nanoscale few-layer graphene transistors is experimentally demonstrated and can be understood within this model as well.
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