Patent ID: 8247249
Filing Date: 2012-08-21
Classification: B82Y,H01L,H01S

Abstract:
1. A method of producing a solid-state light emitting device comprising: orienting a template to have a growth surface defining a growth plane, said template oriented such that its primary crystallographic plane is oriented at an angle α which is out of normal to said growth plane; forming structural sidewalls over at least a portion of said growth surface and extending substantially normal to said growth plane and defining a plurality of window openings, said window openings having a width, w, and a height, h; forming a coalescence layer comprising gallium nitride over said template such that said window openings have formed therein a portion of said coalescence layer such that crystallographic defects which originate at a portion of said growth surface and which lie in planes that are substantially parallel to said crystallographic plane of said template substantially terminate at said sidewalls and thereby substantially do not extend beyond the height h of said window openings, said coalescence layer formed to have an upper region which physically connects said portions of said coalescence layer within said window openings, said upper region of said coalescence layer having an upper surface; polishing said upper surface of said coalescence layer such that said upper surface is primarily in a single plane and has a desired surface roughness; forming a pn-junction light emitting device with an active region over said coalescence layer, said active region comprising: forming a contact layer over said active region.