Patent ID: 8975639
Filing Date: 2015-03-10
Classification: B82Y,C30B,H01L,H01S,Y10T

Abstract:
1. A substrate for epitaxial growth made of gallium nitride crystal, and having epi-ready growth surface, wherein the growth surface consists of a set of neighboring flat surfaces in a form of stripes of a width from 1 to 2000 μm, wherein longer edges of the stripes are parallel one to another, wherein planes of the stripes are disoriented relatively to the crystallographic plane defined by Miller-Bravais indices (0001), (10-10), (11-22) or (11-20) and wherein a disorientation angle of each of the flat surfaces is from 0 to 3 degrees and wherein the disorientation angle is different for each of two neighboring surfaces.