Patent ID: 6187606
Filing Date: 2001-02-13
Classification: H01L

Abstract:
A method of producing a Group III nitride optoelectronic device on a silicon carbide substrate comprising:forming a plurality of discrete crystal portions selected from the group consisting of gallium nitride and indium gallium nitride on the surface of a silicon carbide substrate wherein the step of forming the discrete crystal portions comprises forming the discrete crystal portions in an amount sufficient to minimize or eliminate the heterobarrier but less than an amount that would detrimentally affect or destroy the function of any resulting diode device built on the silicon carbide substrate;forming an aluminum gallium nitride buffer on the surface of the silicon carbide substrate with the discrete crystal portions, and wherein the discrete crystal portions minimize or eliminate the heterobarrier between the silicon carbide substrate and the aluminum gallium nitride buffer layer; andforming an optoelectronic device with a Group III nitride active layer on the buffer layer.