Patent ID: 7998770
Filing Date: 2011-08-16
Classification: B82Y,H01S

Abstract:
1. A method to form a semiconductor light-emitting device, comprising steps of: growing semiconductor layers including a p-type buffer layer, an active layer and an n-type cladding layer on a p-type semiconductor substrate in this order; forming a mask layer on said semiconductor layers; forming a mesa structure by an RIE technique using said mask layer as an etching mask, said mesa structure including said p-type buffer layer, said active layer, and said n-type cladding layer; etching said semiconductor substrate so as to expose a surface having (111) orientation or equivalent thereof: growing an n-type semiconductor layer directly onto said p-type semiconductor substrate and both sides of said mesa structure by using said mask layer as a mask for selective growth, said n-type semiconductor layer including a plane portion deposited on said p-type semiconductor substrate and a wall portion deposited on surfaces of said mesa structure; removing said wall portion of said n-type semiconductor layer deposited on said wall of said mesa structure by etching said wall portion selectively; and growing a semi-insulating burying layer doped with iron on said n-type semiconductor layer so as to bury said mesa structure.