Patent ID: 9178013
Filing Date: 2015-11-03
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor body comprising a first semiconductor material and further comprising a second semiconductor material that extends into the semiconductor body from an uppermost surface of the semiconductor body and that has a band gap larger than a band gap of the first semiconductor material; a first pn-junction formed in the first semiconductor material; at least one of a second pn-junction and a heterojunction formed by the second semiconductor material and extending deeper into the semiconductor body, with respect to the uppermost surface, than the first pn-junction, the second semiconductor material being in contact with the first semiconductor material, and forming part of an edge termination zone of the semiconductor device; wherein the first semiconductor material comprises at least a first doping region of a first conductivity type and at least a second doping region of a second conductivity type, the first and second doping regions form the first pn-junction in the first semiconductor material, the first doping region is in ohmic contact with a first electrode arranged on the uppermost surface of the semiconductor body, and the second semiconductor material comprises at least a first doping region of the first conductivity type adjacent to and in contact with each of the first and second doping regions of the first semiconductor material.