Patent ID: 6426542
Filing Date: 2002-07-30
Classification: H01L

Abstract:
A method for fabricating a rectifier comprising the steps of:providing a first semiconductor layer of a first conductivity type having a first surface and an opposite surface; forming a first electrode layer on said opposite surface of said first semiconductor layer; forming a second semiconductor layer, of said first conductivity type having a lower resistivity than said first semiconductor layer, with one surface disposed in contact with said first surface of said first layer, and having another opposite surface; forming a Schottky barrier contact layer on said another opposite surface defining an active area; forming a trench in said another opposite surface of said second semiconductor layer within the edge of and surrounding said active area; filling said trench with an insulating material to limit current leakage from the edge of said active area; and forming a second electrode layer on said another opposite surface of said second semiconductor layer extending over said trench and said Schottky barrier contact layer and in conductive contact with said Schottky barrier contact layer.