Patent ID: 7553747

Claim:
A method for fabricating a Schottky diode, said method comprising the steps of: (a) forming a first nitride semiconductor layer, and subsequently, a second nitride semiconductor layer having a different conductivity type from that of the first nitride semiconductor layer on a substrate; (b) selectively etching the formed second nitride semiconductor layer, thereby removing part of the second nitride semiconductor layer and thus exposing associated part of the first nitride semiconductor layer; (c) selectively forming a conductive film on the first nitride semiconductor layer to form a Schottky electrode, said conductive film coming into contact with the top surface of the second nitride semiconductor layer; (d) after the step (b), selectively removing a part of the first nitride semiconductor layer to expose an associated part of the substrate; and (e) forming an ohmic electrode on the exposed part of the substrate, the substrate being conductive.