Patent ID: 7821018

Claim:
A GaN-based semiconductor light-emitting device comprising: a stacked body having an n-type semiconductor layer, a light-emitting layer and a p-type semiconductor layer, each formed of a GaN-based semiconductor, sequentially stacked and provided with a first bonding layer made of metal as an outermost layer of the stacked body; an electroconductive substrate; and a second bonding layer formed on the electroconductive substrate and bonded to a bonding surface of the first bonding layer, wherein the bonding surface is opposite a side of the second bonding layer on which the electroconductive substrate is formed, and wherein the second bonding layer is made of a metal of a same crystal structure as the first bonding layer, and allowed to exhibit an identical crystal orientation both in a perpendicular direction of the bonding surface and in an in-plane direction of the bonding surface, and wherein the first bonding layer and the second bonding layer possess a face centered cubic structure and exhibit a crystal orientation of (111) in the perpendicular direction of the bonding surface.