Patent ID: 8022459

Claim:
A device for regulating the flow of electrical current, the device comprising: a semiconductor substrate; a gate electrode; an electrically insulating layer structure located between the gate electrode and the semiconductor substrate, the insulating layer having a dielectric constant greater than 4.0; a source electrode and a drain electrode in direct contact with the semiconductor substrate and proximal to the gate electrode; a gate sidewall layer located on at least one sidewall of the gate electrode, wherein the gate sidewall layer is in contact with the source electrode, wherein at least one of the source electrode and the drain electrode forms a Schottky contact or Schottky-like region with the semiconductor substrate, and wherein the insulating layer structure includes a plurality of layers, the plurality of layers including a first insulating material with a first dielectric constant and a second insulating material with a second dielectric constant, wherein the second insulating material is located on top of the first insulating material, and wherein the dielectric constant of at least one of the plurality of layers is greater than 4.0.