Patent ID: 11923445
Assignee: X-FAB DRESDENT GMBH & CO. KG
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor contact structure comprising:
a two-dimensional electron gas (2DEG) between a first semiconductor layer and a second semiconductor layer;
a silicon implant extending into at least part of the first semiconductor layer and into at least part of the second semiconductor layer and connected to said 2DEG along an interface between said 2DEG and said silicon implant, wherein said interface has a nonlinear shape; and
a contact connected to said 2DEG via said silicon implant
wherein said nonlinear shape comprises a crenulated shape and wherein said crenulated shape comprises one or more troughs between consecutive peaks in the Si implant, said troughs having a first width and a depth and said peaks having a second width, wherein said first width is less than 1 μm and said depth is in the range of 0.1 μm to 6 μm.