Patent ID: 8822250

Claim:
A method for manufacturing a semiconductor light emitting device, comprising: providing a first stack film on a first substrate, the first stack film being formed by stacking a p-type nitride semiconductor layer, an active layer having a multiquantum well structure of a nitride semiconductor, and an n-type nitride semiconductor layer in this order; patterning on the first stack film so as to have a tapered shape in cross-section, with an area of a film plane gradually increasing from the n-type nitride semiconductor layer toward the p-type nitride semiconductor layer; forming a protection film that protects an upper face of the n-type nitride semiconductor layer and side faces of the first stack film; removing the protection film from the upper face of the n-type nitride semiconductor layer to expose the upper face of the n-type nitride semiconductor layer; forming an n-electrode on the exposed upper face of the n-type nitride semiconductor layer, the n-electrode being connected to the n-type nitride semiconductor layer; and forming a concave-convex region on the upper face of the n-type nitride semiconductor layer by performing wet etching on the upper face of the n-type nitride semiconductor layer with the use of an alkaline solution, after the n-electrode is formed, the concave-convex region having first concavities and convexities and second concavities and convexities that are smaller than the first concavities and convexities, the first concavities and convexities randomly coexisting with second concavities and convexities, the first concavities and convexities having height differences of 1 μm to 3 μm, the second concavities and convexities having height differences of 300 nm or smaller.