Todd Schumann, Sefaattin Tongay, Arthur F. Hebard Department of Physics, University of Florida, Gainesville FL 32611 This article demonstrates the formation of Schottky diodes on silicon (Si), gallium arsenide (GaAs), and 4H-silicon carbide (4H-SiC) using the semimetal graphite. The forward bias characteristics follow thermionic emission theory, and the extracted Schottky barrier heights closel...

This article studies the sub-linearity of output characteristics measured in Schottky-barrier metal-oxide-semiconductor field-effect transistors with simulations and experiments. It is shown that not due to forward-biased Schottky diode at drain contact interface but bias impact on source-side Schottky-barrier, resulting an increased carrier injection increasing drain–source voltage. The simula...

A vertical diode structure comprising homogeneous monolayer epitaxial graphene on silicon carbide is fabricated by thermal decomposition of a Si-face 4H-SiC wafer in argon atmosphere. Current-voltage characteristics of the graphene/SiC Schottky junction were analyzed by applying the thermionic-emission theory. Extracted values of the Schottky barrier height and the ideality factor are found to ...

The p-n junction cannot be implemented at the nanoscale because the doping is very often a detrimental effect. The doping could change dramatically the properties of a nanomaterial such as graphene or single-walled carbon nanotubes. Therefore, we will present two graphene diodes without a p-n junction. The first is based on the dissimilar metals having workfunction below and above the graphene ...

Diamond, which has excellent physical properties, is attractive for use in industrial applications. Because diamond is rated the highest for hardness and heat conductivity among all known materials, it is widely used for products such as abrasive grains, cutting tools, and heatsinks. Diamond also exhibits excellent transparency even in the ultraviolet range and can be applied to optical tools. ...