Patent ID: 7535075
Filing Date: 2009-05-19
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a first conductive type semiconductor substrate; a Schottky electrode forming a Schottky interface between a surface of the semiconductor substrate and the Schottky electrode; a leakage suppression structure, formed in a surface region of the semiconductor substrate, for suppressing a leakage current by generating a depletion layer when a reverse bias voltage is applied between the Schottky electrode and the semiconductor substrate; and a highly doped layer formed in the surface region of the semiconductor substrate in a region between the surface and the leakage suppression structure, the highly doped layer being of the first conductive type and exhibiting a higher impurity concentration than the semiconductor substrate, and forming the Schottky interface between the Schottky electrode and the highly doped layer.