Patent ID: 8860085
Filing Date: 2014-10-14
Classification: H01L

Abstract:
1. A III-nitride power semiconductor device comprising: a III-nitride heterojunction comprising a III-nitride channel layer and a III-nitride barrier layer over said III-nitride channel layer to generate a two-dimensional electron gas; said III-nitride barrier layer being decomposed so as to achieve a reduced nitrogen region in said III-nitride barrier layer, compared to an adjoining region of said III-nitride barrier layer; said reduced nitrogen region situated in said III-nitride barrier layer and substantially confined under at least one of a gate, a source electrode, and a drain electrode of said III-nitride power semiconductor device such that said reduced nitrogen region does not extend between said gate and either of said source electrode and said drain electrode, said reduced nitrogen region having an increased group III semiconductor concentration compared to said adjoining region of said III-nitride barrier layer.