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Field-Effect Tunneling Transistor Based on Vertical Graphene Heterostructures

TitleField-Effect Tunneling Transistor Based on Vertical Graphene Heterostructures
Publication TypeJournal Article
Year of Publication2012
AuthorsBritnell, L., Gorbachev R. V., Jalil R., Belle B. D., Schedin F., Mishchenko A., Georgiou T., Katsnelson M. I., Eaves L., Morozov S. V., Peres N. M. R., Leist J., Geim A. K., Novoselov K. S., and Ponomarenko L. A.
JournalScience
Volume335
Pagination947 – 950
Date Published02/2012
ISSN0036-8075
Abstract

An obstacle to the use of graphene as an alternative to silicon electronics has been the absence of an energy gap between its conduction and valence bands, which makes it difficult to achieve low power dissipation in the OFF state. We report a bipolar field-effect transistor that exploits the low density of states in graphene and its one-atomic-layer thickness. Our prototype devices are graphene heterostructures with atomically thin boron nitride or molybdenum disulfide acting as a vertical transport barrier. They exhibit room-temperature switching ratios of approximate to 50 and approximate to 10,000, respectively. Such devices have potential for high-frequency operation and large-scale integration.

URLhttp://www.sciencemag.org/content/335/6071/947.short
DOI10.1126/science.1218461

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