Patent ID: 7190004

Claim:
A light emitting device comprising: a nitride semiconductor substrate with a resistivity of 0.5 Ω·cm or less; an n-type nitride semiconductor layer at a first main surface side of said nitride semiconductor substrate and a p-type nitride semiconductor layer placed more distantly from said nitride semiconductor substrate than said n-type nitride semiconductor layer at said first main surface side; and a light emitting layer placed between said n-type nitride semiconductor layer and said p-type nitride semiconductor layer at said first main surface side, wherein one of said nitride semiconductor substrate and said p-type nitride semiconductor layer is mounted at the top side which emits light and the other is placed at the down side, and a single electrode is placed at the top side, and said substrate is n-typed with oxygen-doping, and said substrate has an oxygen concentration in the range from 1E17 to 2E19 oxygen atoms/cm 3 and a thickness of 100 μm to 200 μm.