Patent ID: 8884269

Claim:
A nitride-based semiconductor light emitting device comprising: a heterogeneous substrate for growth of a semiconductor; an anti-bowing layer having a composition of Al x Ga 1-x N (0.01≦x≦0.04); a light emitting structure formed on the anti-bowing layer and including a first conductivity-type nitride semiconductor layer, an active layer, and a second conductivity-type nitride semiconductor layer, and a first electrode disposed on the first conductivity-type nitride semiconductor layer; wherein the first conductivity-type nitride semiconductor layer has a composition of Al y Ga 1-y N (0.01≦x≦0.04, 0≦y≦x), wherein the anti-bowing layer, the first conductivity-type nitride semiconductor layer, the active layer, and the second conductivity-type nitride semiconductor layer are sequentially formed on the heterogeneous substrate for growth of a semiconductor.