Patent ID: 10804384

Abstract:
A semiconductor device includes: a back barrier layer containing AlXGa(1-X)N (0<X≤1); an electron transit layer containing AlaInbGa(1-a-b)N (0≤a+b≤1) and formed on the back barrier layer; a top barrier layer containing AlYGa(1-Y)N (0<Y≤1) and formed on the electron transit layer; an electron supply layer containing AlZGa(1-Z)N (0<Z≤1) and formed on the top barrier layer, the electron supply layer having an opening to expose the top barrier layer; a two-dimensional electron gas region formed in an area of a surface layer portion of the electron transit layer, the area opposing the electron supply layer with the top barrier layer interposed between the electron supply layer and the area; a gate insulating layer formed in the opening of the electron supply layer; and a gate electrode layer formed on the gate insulating layer and opposing the electron transit layer with the gate insulating layer interposed therebetween.