Patent ID: 8058167
Filing Date: 2011-11-15
Classification: H01L

Abstract:
1. A method of manufacturing a device for regulating a flow of electrical current, the method comprising: creating exposed areas on a semiconductor substrate in an area proximal to a gate electrode; etching the exposed areas using an at least partially isotropic etch to create an etched area that extends to an undercut area partially under the gate; depositing and thermally annealing a film of a first metal with the semiconductor substrate such that a Schottky or Schottky-like source electrode and a Schottky or Schottky-like drain electrode are formed on the undercut area using the first metal; removing a portion of the first metal that is not in the undercut area; blanket depositing a film of a second metal on the etched area of the semiconductor substrate; reacting the second metal such that a continued Schottky or Schottky-like source electrode and a continued Schottky or Schottky-like drain electrode are formed next to the undercut area using the second metal.