Patent ID: 8716048

Claim:
A method for manufacturing a light emitting device, comprising: forming an n-type nitride semiconductor layer on a substrate; forming an active layer on the n-type nitride semiconductor layer; forming an AlN/GaN layer of a super lattice structure by alternately growing an AlN layer and a GaN layer on the active layer; and forming a p-type nitride semiconductor layer on the AlN/GaN layer of the super lattice structure, wherein the AlN layer is doped with a p-type dopant, and the GaN layer is a u-GaN layer, wherein the forming of an AlN/GaN layer of a super lattice structure is performed in a reaction chamber, and comprises: (a) supplying source gases comprising a p-type dopant source gas, an N source gas, and an Al source gas into the reaction chamber to grow a p-type AlN layer doped with the p-type dopant on the active layer; (b) supplying NH 3 gas while stopping the growth of the p-type AlN layer by stopping the supply of the p-type dopant source gas and the Al source gas into the reaction chamber for 1 to 60 seconds; (c) supplying NH 3 gas and a Ga source gas into the reaction chamber to grow a u-GaN layer on the p-type AlN layer for 1 to 60 seconds; (d) supplying NH 3 gas while stopping the growth of the u-GaN layer by stopping the supply of the Ga source gas for 1 to 60 seconds; and repeating (a) to (d) until the AlN/GaN layer of the super lattice structure is formed on the active layer, and wherein, when repeating (a) to (d), the p-type dopant source gas is supplied in different flows into the reaction chamber, such that the AlN layers comprise different amounts of the p-type dopant.