Patent ID: 9601610
Date: 2017-03-21
CPC Classifications: H01L

Claim:
1. A HEMT device comprising: a III-Nitride material substrate, having a top plane surface that is not parallel to a C-plane of the III-Nitride material substrate; a p-doped epitaxial layer of III-Nitride material grown on said top surface of said substrate; a recess etched in said p-doped epitaxial layer, the recess having at least one plane wall that is not parallel to the surface of the substrate; said at least one plane wall being parallel to a polar plane of the III-Nitride material of the p-doped epitaxial layer; at least one carrier carrying layer formed on said at least one plane wall of the recess; at least one carrier supply layer formed on at least a portion of said at least one carrier carrying layer, such that a 2DEG region is formed in the carrier carrying layer at the interface with the carrier supply layer along said at least one plane wall of the recess; a doped source region formed at the surface of said p-doped epitaxial layer such that the doped source region is separated from said 2DEG region by a channel region; a gate insulating layer formed on the channel region; and a gate contact layer formed on the gate insulating layer.