Patent ID: 9099322
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A semiconductor power device, comprising: a semiconductor body having a first conductivity device; a trench in said semiconductor body having side walls and a bottom; and a first column of semiconductor material within said trench, said column housing dopant ions having a second conductivity type; wherein crystalline planes <100> and <130> are exposed on the bottom of the trench, and crystalline plane <010> is exposed on the side walls; wherein said first column has a spatially uniform distribution of said dopant ions; wherein said first column has a width of between 0.8 and 2 μm, and a depth of between 3 and 50 μm or between 5 and 30 μm, with an aspect ratio of between 1.5 and 62.5.