graphenearebetterdescribedbyconventionalsemiconductor physics 6,7 .Hereweusescanningphotocurrentmicroscopyto exploretheimpactofelectricalcontactsandsheetedgeson chargetransportthroughgraphenedevices.Thephotocur
Contact and edge effects in graphene devices Eduardo J. H. Lee1, Kannan Balasubramanian1, R. Thomas Weitz1, Marko Burghard1 and Klaus Kern1 1 Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart. Germany. ...
edge contactgrapheneoptoelectronic devicesThe effects of graphene n-doping on metal–graphene (M–G) contacts in combination with 1D edge contacts is discussed by J.-H. Park and co-workers, as described on page 864, presenting a record contact resistance of 23 Ωμm at room temperature (19 ...
Introduced in silicon and carbon nanotube Schottky barrier transistors2,3, back gating proves particularly efficient in graphene4–6 and other 2D materials7, thanks to the weak screening at 2D. Going one step further, one can think of turning contacts to active elements by controlling inde- ...
Atomistic simulations reproduce experimental observations of transient frictional strengthening of graphene on an amorphous silicon substrate, an effect which diminishes as the number of graphene layers increases. Graphite and other lamellar materials ar
In conventional Si-based devices, substantial dangling bonds existing on the Si surface create abundant surface states that induce undesired interfacial effects such as Fermi-level pinning (FLP) and thus restrain the formation of ohmic contacts.27,28 Unlike bulk Si, 2D materials with the atomically...
Apparently, these methods are much more sophisticated for fabrication and equipment set-up, and they are also more suitable for bottom-gate devices as compared to the two-terminal methods performing conventional I–V scanning. In addition to Rc, the surface states at the OSC/dielectric interface ...
Edge effects in vortex-based nanocontact oscillatorsdomain structure (including magnetic bubbles)dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)The Oersted field about a nanocontact on a thin film can nucleate vortex formation in the film, and spin ...
Consequently, it becomes highly relevant and significant to investigate the influence of anisotropic metal contacts on charge transport using edge-contacted devices. So, in this work, we present an experimental study on contact aniso- tropy which refers to the anisotropy ratio of contact resistance ...
Here we set out to develop a soft, transparent graphene contact lens electrode (GRACE) and use it for ERG measurements from cynomolgus monkeys and rabbits. The GRACE devices form much conformal and tighter interface with the cornea than stiff contact lens electrodes and record ERG from the whole...