Patent ID: 8772842

Claim:
A diode, comprising: a III-N material structure; an electrically conductive channel in the III-N material structure; two terminals, wherein a first terminal is an anode adjacent to the III-N material structure, and a second terminal is a cathode in ohmic contact with the electrically conductive channel; and a dielectric layer over at least a portion of the anode; wherein the diode is configured such that in operation, when voltage at the anode is less than voltage at the cathode, the diode is in an OFF state and a reverse bias current flows between the anode and the cathode, and when voltage at the anode is greater than voltage at the cathode, the diode is in an ON state and a substantial current flows from the cathode into the anode through the electrically conductive channel; and the anode comprises a first metal layer comprising nickel adjacent to the III-N material structure, a second metal layer comprising gold, and an intermediary electrically conductive structure between the first metal layer and the second metal layer, the intermediary electrically conductive structure comprising a layer of gold adjacent to the first metal layer and a layer of nickel between the layer of gold and the second metal layer.