Patent ID: 8883612

Claim:
A method of manufacturing a semiconductor device, comprising: forming vertical semiconductor elements extending between a front surface and a rear side of a semiconductor layer by: forming a porous area at a surface of a semiconductor body, wherein the semiconductor body includes a porous structure in the porous area; forming the semiconductor layer on the porous area by epitaxial growth so as to have a thickness in a range of 5 μm to 200 μm; forming semiconductor regions including source, body, emitter, base and/or collector regions in a front surface of the semiconductor layer by ion implantation; introducing, after forming the semiconductor regions, hydrogen into the porous area by a thermal treatment, thereby activating a reallocation of pores and causing cavities to be generated, so that the semiconductor layer with the semiconductor regions is separated from the semiconductor body along the porous area; and applying, after separation of the semiconductor layer, rear side processing to the semiconductor layer, wherein the rear side processing comprises ion implantation.