Patent ID: 9117891
Filing Date: 2015-08-25
Classification: H01L

Abstract:
1. A compound semiconductor, comprising: an electron transit layer formed of a compound semiconductor; an insulating film formed on the electron transit layer; and an electrode formed so as to overlie the electron transit layer, wherein the insulating film is interposed between the electron transit layer and the electrode, wherein part of the electron transit layer below the electrode is formed such that a first compound semiconductor having a first polar face and a second compound semiconductor having a second polar face different than the first polar face, wherein the first and second compound semiconductors are alternately arranged, wherein the insulating film is in direct contact with at least two portions of the first compound semiconductor having the first polar face and at least one portion of the second compound semiconductor having the second polar face, and wherein polarization charges in the first polar face have opposite polarity to polarization charges in the second polar face.