Patent ID: 8765509

Claim:
A method for producing a Group III nitride semiconductor light-emitting device comprising an n-type layer, a light-emitting layer, and a p-type layer, which are made of Group III nitride semiconductor, sequentially deposited on a buffer layer which is deposited on a sapphire substrate having a c-plane main surface, said main surface having a texture structure, the method comprising: forming the texture on the main surface of the sapphire substrate so as to have a depth of 1 μm to 2 μm; forming a buried layer of Group III nitride semiconductor on the buffer layer, to flatten a top surface by burying the texture, at a temperature which is lower by 20° C. to 80° C. than that when the n-type layer is formed; and forming the n-type layer on the buried layer at a temperature of 1000° C. to 1200° C., wherein a side surface of the texture provided on the sapphire substrate is inclined by 40° to 80°.