Patent ID: 8383495
Filing Date: 2013-02-26
Classification: H01L

Abstract:
1. A method for fabricating a semiconductor layer structure, the method comprising the following steps: a) providing a substrate made of a first semiconductor material that includes silicon; b) applying a first layer to the substrate, the first layer made of a second semiconductor material that includes silicon carbide, the substrate and the layer defining a semiconductor layer structure, the step of applying the first layer to the substrate including steps of implanting carbon ions into the substrate to produce a buried silicon carbide layer and then removing material to uncover the first layer; c) implanting light gas ions into the semiconductor layer structure to produce a cavity layer in the semiconductor layer structure, the cavity layer including a plurality of cavities, wherein the light gas ions are selected from a group consisting of hydrogen ions, noble gas ions, and a combination of hydrogen ions and noble gas ions; d) implanting impurity atoms into the semiconductor layer structure with a dose of no more than about 5×10 e) applying at least one epitaxial layer to the semiconductor layer structure.