Patent ID: 9129891
Filing Date: 2015-09-08
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a first semiconductor layer provided over a substrate; an electron transit layer contacting a top of the first semiconductor layer; and a second semiconductor layer contacting a top of the electron transit layer, wherein the electron transit layer has a dual quantum well layer comprising a structure where a first well layer, an intermediate barrier layer, and a second well layer are sequentially stacked, wherein an energy of a conduction band of the intermediate barrier layer is lower than an energy of conduction band of the first semiconductor layer and the second semiconductor layer, wherein a ground level is generated in the first and second well layers, and a first excitation level is generated in the dual quantum well layer, and wherein electrons in the ground level exist having a single peak in each of the first well layer and the second well layer and electrons in the first excitation level exist having a single peak in each of the first well layer and the second well layer.