Patent ID: 9484221
Filing Date: 2016-11-01
CPC Classification: H01L

Claim Text:
1. A power semiconductor device, comprising: a semiconductor body having a first surface and a second surface that runs substantially parallel to the first surface; a first metallization arranged on the first surface; and a second metallization arranged on the second surface, wherein the semiconductor body comprises: an n-doped first semiconductor region spaced apart from the first metallization and having a first maximum doping concentration; an n-doped second semiconductor region having a second maximum doping concentration higher than the first maximum doping concentration and adjoining the first semiconductor region, wherein the second semiconductor region is comprised of a semiconductor material comprising electrically active chalcogen impurities as donors, and wherein at least 90% of the electrically active chalcogen impurities form isolated defects in the semiconductor material; and a third semiconductor region in ohmic contact with the second metallization, arranged between the second metallization and the second semiconductor region, and adjoining the second semiconductor region.