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Impact of graphene polycrystallinity on the performance of graphene field-effect transistors

AuthorsJiménez, David; Cummings, Aron W.; Chaves, Ferney; Tuan, Dinh van; Kotakoski, Jani; Roche, Stephan
Issue Date2014
PublisherAmerican Institute of Physics
CitationApplied Physics Letters 104(4): 043509 (2014)
AbstractWe have used a multi-scale physics-based model to predict how the grain size and different grain boundary morphologies of polycrystalline graphene will impact the performance metrics of graphene field-effect transistors. We show that polycrystallinity has a negative impact on the transconductance, which translates to a severe degradation of the maximum and cutoff frequencies. On the other hand, polycrystallinity has a positive impact on current saturation, and a negligible effect on the intrinsic gain. These results reveal the complex role played by graphene grain boundaries and can be used to guide the further development and optimization of graphene-based electronic devices.
DescriptionUnder the terms of the Creative Commons Attribution (CC BY) license to their work.
Publisher version (URL)http://dx.doi.org/10.1063/1.4863842
Identifiersdoi: 10.1063/1.4863842
issn: 0003-6951
e-issn: 1077-3118
Appears in Collections:(CIN2) Artículos
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