Patent ID: 6580736
Filing Date: 2003-06-17
Classification: B82Y,H01S

Abstract:
A semiconductor light emitting device comprising:a first conductivity type first semiconductor layer formed of a group III nitride based semiconductor; a second conductivity type second semiconductor layer formed of a group III nitride based semiconductor and having a current injection region; an emission layer formed of a group III nitride based semiconductor, provided between said first semiconductor layer and said second-semiconductor layer, into which current is injected through said current injection region due to application of positive bias between said first semiconductor layer and said second semiconductor layer; and a current blocking layer formed of a group III nitride based semiconductor, provided in said second semiconductor layer except said current injection region, wherein said current blocking layer has strain so as to contain an electric field reverse to said positive bias by piezoelectric effect, the carrier concentration of said current blocking layer is lower than 1Ã—1019 cmâˆ’3, said current blocking layer contains aluminum and gallium, the surface of said current blocking layer is terminated with nitrogen, and the aluminum composition of said current blocking layer is greater than 0.1.