Patent ID: 6303485
Filing Date: 2001-10-16
Classification: H01L,Y10S

Abstract:
A method of producing a gallium nitride-based III-V Group compound semiconductor device, comprising the steps of:growing at least a p-type layer of gallium nitride on a substrate, said substrate being made of single-crystal Al.sub.2 O.sub.3 ;electroplating a film of beryllium containing material on exposed surface of said p-type layer of gallium nitride;performing a diffusion procedure to diffuse said beryllium containing material into said p-type layer of gallium nitride from said electroplated film formed on said exposed surface of said p-type layer of gallium nitride;cleaning said exposed surface of said p-type layer of gallium nitride from said electroplated film;forming a p-contact layer by depositing beryllium-gold alloy layer on said cleaned exposed surface of said p-type layer of gallium nitride by evaporation; and,exposing said semiconductor device to a high temperature environment.