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60 GHz current gain cut-off frequency graphene nanoribbon FET

Published online by Cambridge University Press:  19 October 2010

Nan Meng
Affiliation:
IEMN – CNRS 8520, Avenue Poincare, 59652 Villeneuve d'ASCQ Cedex, France. Phone: +33 3 20 19 78 41.
Francsico-Javier Ferrer
Affiliation:
IEMN – CNRS 8520, Avenue Poincare, 59652 Villeneuve d'ASCQ Cedex, France. Phone: +33 3 20 19 78 41.
Dominique Vignaud
Affiliation:
IEMN – CNRS 8520, Avenue Poincare, 59652 Villeneuve d'ASCQ Cedex, France. Phone: +33 3 20 19 78 41.
Gilles Dambrine
Affiliation:
IEMN – CNRS 8520, Avenue Poincare, 59652 Villeneuve d'ASCQ Cedex, France. Phone: +33 3 20 19 78 41.
Henri Happy*
Affiliation:
IEMN – CNRS 8520, Avenue Poincare, 59652 Villeneuve d'ASCQ Cedex, France. Phone: +33 3 20 19 78 41.
*
Corresponding author: H. Happy Email: [email protected]

Abstract

We report investigations on the fabrication and characterization of graphene nanoribbon (GNR) field-effect transistors. Graphene layers are obtained from the thermal decomposition of a Si-face 4H-SiC substrate. To achieve high dynamic performance, a structure with an array of GNR connected in parallel was fabricated by e-beam lithography. The best intrinsic current gain cut-off frequency of 60 GHz and maximum oscillation frequency of 28 GHz were achieved. This study demonstrates the exciting potential of GNR in high-frequency electronics.

Type
Original Article
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2010

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