Patent ID: 8093606

Claim:
A nitride semiconductor light emitting device comprising: a substrate made of SiC; a first light reflection layer provided on the substrate, the first light reflection layer being formed by laminating alternately a low refractivity layer and a high refractivity layer which has a higher refractivity than a refractivity of the low refractivity layer; and a light emitting layer forming portion provided on the first light reflection layer, wherein the low refractivity layer of the first light reflection layer is formed with a single layer structure of an Al x ,Ga 1−x N (0<x<1) layer, and the high refractivity layer of the first light reflection layer is formed with a multi layer structure formed by laminating alternately an Al y Ga 1−y N (0≦y≦0.5 and y<x) layer and an In u Ga 1−u N (0<u≦1) layer, wherein one of the low refractivity layers is in contact with one of the high refractivity layers, and the one of the high refractivity layers is in contact with another of the low refractivity layers.