Patent ID: 8829532

Claim:
A semiconductor layer structure, comprising: a substrate comprising (111), (100), or (110) silicon; a first layer of ion beam synthesized silicon carbide disposed on the substrate, the first layer and the substrate defining an interface therebetween; an impurity region enriched with impurity atoms including at least one of oxygen and nitrogen, the impurity region disposed below the interface, the impurity region including 3C—SiC precipitates; a cavity layer within the impurity region, the cavity layer including cavities produced by ion implantation, the cavities including gas bubbles formed of gas selected from the group consisting of hydrogen gas, helium gas, neon gas, and a mixture thereof; an epitaxial layer applied directly to the first layer, the epitaxial layer being substantially crack-free, and a residual strain of the epitaxial layer being less than or equal to 1 GPa; and a defect region including dislocations and stacking faults within the cavity layer.