Patent ID: 8390101
Filing Date: 2013-03-05
Classification: C30B,H01L

Abstract:
1. A microelectronic device structure adapted for high voltage operation, said microelectronic device structure comprising: (a) a first conductive GaN base layer comprising a GaN structure having a thickness of greater than about 50 μm and having a top surface characterized by a dislocation defect density of not more than about 5×10 (b) a second GaN layer having a dopant concentration of not more than about 1×10 (c) at least one metal contact adjacent to at least one of (i) the top surface of said first conductive GaN base layer and (ii) said second GaN layer, forming a metal-to-semiconductor junction with at least one of said first conductive GaN base layer and said second GaN layer; wherein said microelectronic device structure has a breakdown voltage of at least about 450V.