Patent ID: 7855413

Claim:
A diode comprising: a semiconductor substrate having single crystal structure of first conductivity type; a principal semiconductor layer of a first conductivity type grown on a surface of said semiconductor substrate; a narrow trench formed in the principal semiconductor layer, the narrow trench having a bottom and four sidewalls which are each a {100} oriented surface of the principal semiconductor layer; a filling material having surfaces with same crystalline orientation as the surfaces of the principal semiconductor layer in contact with the filling material and being epitaxially grown on the bottom and four sidewalls of the narrow trench and doped with a dopant of a second conductivity type; a Schottky electrode in contact with the principal semiconductor layer and with a surface of the filling material, the Schottky electrode forming a Schottky junction with the principal semiconductor layer and forming an ohmic contact to the filling material; and an ohmic electrode formed on a back surface of the semiconductor substrate and forming ohmic contact to the semiconductor substrate.