Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3180707
Keywords
1; f noise; flicker noise; graphene; hafnium compounds; transistors
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Funding
- DARPA-SRC Focus Center Research Program (FCRP) through its Center on Functional Engineered Nano Architectonics (FENA)
- Interconnect Focus Center (IFC)
- AFOSR [A9550-08-1-0100]
- IFC
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The authors report the results of an experimental investigation of the low-frequency noise in the double-gate graphene transistors. The back-gate graphene devices were modified via addition of the top gate separated by similar to 20 nm of HfO2 from the single-layer graphene channels. The measurements revealed low flicker noise levels with the normalized noise spectral density close to 1/f (f is the frequency) and Hooge parameter alpha(H)approximate to 2x10(-3). The analysis of noise spectral density dependence on the top and bottom gate biases helped to elucidate the noise sources in these devices. The obtained results are important for graphene electronic and sensor applications.
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