期刊
JOURNAL OF COMPUTATIONAL ELECTRONICS
卷 8, 期 3-4, 页码 441-450出版社
SPRINGER
DOI: 10.1007/s10825-009-0282-2
关键词
Graphene nanoribbons; Carbon electronics; Nanoelectronic devices; Tunneling FET
资金
- EU via the IU.NET Consortium [215752]
In this paper we perform a simulation study on the limits of graphene-nanoribbon field-effect transistors (GNR-FETs) for post-CMOS digital applications. Both conventional and tunneling FET architectures are considered. Simulations of conventional narrow GNR-FETs confirm the high potential of these devices, but highlight at the same time OFF-state leakage problems due to various tunneling mechanisms, which become more severe as the width is made larger and require a careful device optimization. Such OFF-state problems are partially solved by the tunneling FETs, which allow subthreshold slopes better than 60 mV/dec, at the price of a reduced ON-current. The importance of a very good control on edge roughness is highlighted by means of a direct simulation of devices with non-ideal edges.
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