Patent ID: 9070706
Filing Date: 2015-06-30
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate; at least two insulation layer portions spaced apart on the substrate; a group III-V material layer filling the space between the insulation layer portions, and the group III-V material layer including a portion protruding higher than the insulation layer portions; a barrier layer covering the side and upper surfaces of the protruding portion of the group III-V material layer and having a bandgap larger than a bandgap of the group III-V material layer; a gate insulation film covering the surface of the barrier layer; a gate electrode on the gate insulation film; and source and drain electrodes disposed apart from the gate electrode, wherein the overall composition of the group III-V material layer is uniform; wherein the protruding portion of the group III-v material layer is substantially defect-free; and wherein the source and drain electrodes physically contact the barrier layer and the gate insulation film.