Patent ID: 7750412

Claim:
A structure that includes a rectifier, the structure comprising: a semiconductor region of a first conductivity type; trenches extending into the semiconductor region; a dielectric layer lining opposing sidewalls of each trench but being discontinuous along a bottom of each trench; a silicon region of a second conductivity type extending along the bottom of each trench and forming a PN junction with the semiconductor region, wherein the second conductivity type is opposite the first conductivity type; a doped liner lining the bottom of each trench and vertically lining at least a portion of the dielectric layer, the doped liner being in direct contact with the silicon region; a fill material filling each trench; and an interconnect layer extending over the semiconductor region and being in direct contact with the doped liner, wherein the interconnect layer contacts mesa surfaces of the semiconductor region between adjacent trenches to form Schottky contacts therebetween.