Patent ID: 9647080
Date: 2017-05-09
CPC Classifications: H01L

Claim:
1. A method for manufacturing a Schottky device, comprising: providing a semiconductor material of a first conductivity type having first and second major surfaces; forming a plurality of trenches extending from the major surface into the semiconductor material, including forming a first trench having a floor and sidewalls, a dielectric material on the floor and sidewalls and a semiconductor material on the dielectric material; and further including: forming a masking element over the first trench; forming a barrier height adjustment layer of a second conductivity in the semiconductor material, the barrier height adjustment layer extending from the first major surface into the semiconductor material a distance that is less than a zero bias depletion boundary by forming doped regions in portions of the semiconductor material adjacent the first trench, the doped regions serving as the barrier height adjustment layer; removing the masking element; and forming an electrically conductive material in contact with the barrier height adjustment layer, wherein the electrically conductive material forms a Schottky contact.