Title:
|
Impact of graphene polycrystallinity on the performance of graphene field-effect transistors
|
Author:
|
Jiménez Jiménez, David; Cummings, Aron; Chaves Romero, Ferney Alveiro; Dinh, Van Tuan; Kotakoski, Jani; Roche, Stephan; American Institute of Physics
|
Abstract:
|
We 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. |
Subject(s):
|
-Graphene -Carrier mobility -Capacitance -Carrier density -Low field transport -Polycrystals |
Rights:
|
open access
Tots els drets reservats.
https://rightsstatements.org/vocab/InC/1.0/ |
Document type:
|
Article |
Published by:
|
|
Share:
|
|
Uri:
|
https://ddd.uab.cat/record/115884
|