Patent ID: 7378684
Filing Date: 2008-05-27
Classification: C30B,H01L

Abstract:
1. A gallium nitride semiconductor structure, comprising: a silicon carbide substrate; a plurality of gallium nitride posts on the silicon carbide substrate, the gallium nitride posts each including a gallium nitride sidewall and a gallium nitride top surface, and defining a plurality of trenches therebetween; a non-gallium nitride capping layer directly on the top surfaces of the gallium nitride posts; a lateral gallium nitride layer that extends laterally from the gallium nitride sidewalls of the gallium nitride posts into the trenches, wherein the lateral gallium nitride layer also extends vertically in the trenches to beyond the non-gallium nitride capping layer; a continuous overgrown lateral gallium nitride layer that extends laterally from the lateral gallium nitride layer that extends vertically to beyond the non-gallium nitride capping layer, onto the non-gallium nitride capping layer, and continuously across the non-gallium nitride capping layer; and a plurality of microelectronic devices in the continuous overgrown lateral gallium nitride layer; wherein the trenches extend into the silicon carbide substrate.