Impact of Size Effect on Graphene Nanoribbon Transport

Details Impact of Size Effect on Graphene Nanoribbon Transport Impact of Size Effect on Graphene Nanoribbon Transport

2010-01-13

arxiv.org/abs/1001.2318v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

to be published in IEEE Electron Device Letters

Scientific paper

Graphene has shown impressive properties for nanoelectronics applications including a high mobility and a width-dependent bandgap. Use of graphene in nanoelectronics would most likey be in the form of graphene nanoribbons (GNRs) where the ribbon width is expected to be less than 20 nm. Many theoretical projections have been made on the impact of edge-scattering on carrier transport in GNRs - most studies point to a degradation of mobility (of GNRs) as well as the on/off ratio (of GNR FETs). This study provides the first clear experimental evidence of the onset of size-effect in patterned GNRs; it is shown that for W<60 nm, carrier mobility in GNRs is limited by edge-scattering.

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