Patent ID: 9614026
Date: 2017-04-04
CPC Classifications: H01L,Y02E

Claim:
1. An electronic device, comprising: a trigonal crystal substrate defining a (0001) C-plane; a rhombohedrally aligned buffer layer comprising a plurality of rhombohedrally aligned (111)-oriented crystals disposed on the (0001) C-plane of the crystal substrate, wherein the plurality of rhombohedrally aligned (111)-oriented crystals comprise a material selected from the group consisting of group IV semiconductors and alloys of group IV semiconductors; at least one layer comprising a first region disposed on the rhombohedrally aligned buffer layer, the first region comprising a p+doped SiGe layer having a thickness of less than about 100 nm and a secondary region disposed on the first region, the secondary region comprising a p-doped Ge, or intrinsic Ge material to form a quantum well structure for the fast transport of holes, such that the secondary region collects holes from the first region; and wherein additional layers have the first region disposed on the secondary region and the secondary region disposed on the first region.