Patent ID: 8530300
Filing Date: 2013-09-10
Classification: H01L

Abstract:
1. A method of forming a semiconductor device with drift regions of a first doping type and compensation regions of a second doping type, comprising: providing a first semiconductor layer; forming a plurality of layer stack arrangements one above the other on the first semiconductor layer, each layer stack arrangement comprising at least one second semiconductor layer, a plurality of first dopant regions with dopants of the first doping type and a plurality of second dopant regions with dopants of the second dopant type, at least some of the first dopant regions and at least some of the second dopant regions being arranged alternatingly and distant from one another, and interlayer segments between at least some neighbouring first and second dopant regions, wherein the interlayer segments are formed separately for each of the layer stack arrangements, wherein the first dopant regions and the second dopant regions of two adjacent layer stack arrangements are formed such that at least some of the first dopant regions are arranged substantially one above the other in a first direction and at least some of the second dopant regions are arranged substantially one above the other in the first direction; and diffusing the dopants of the first and second dopant regions such that drift regions are formed from dopants of the first dopant regions, and such that compensation regions are formed from dopants of the second dopant regions.