Patent ID: 8519411

Claim:
A semiconductor light emitting device comprising: an active layer; a current spreading layer formed above the active layer, having a larger bandgap energy than the active layer, and spreading injected carriers in the plane of the active layer; an intermediate layer formed on the current spreading layer, having a larger bandgap energy than the active layer, and having a lower Al composition than the current spreading layer; a surface processed layer formed on the intermediate layer, and having an uneven surface region in which a large number of concave-convex structures are formed at its surface; and an electrode formed on a region except the uneven surface region of the surface processed layer, and injecting the carriers to operate, wherein the surface processed layer having a higher conduction band edge energy from the Fermi level than that of the intermediate layer, or wherein the surface processed layer having a higher valence band edge energy from the Fermi level than that of the intermediate layer.