Patent ID: 8513684

Claim:
A nitride semiconductor light emitting device comprising: a support substrate comprising a hexagonal gallium nitride semiconductor; a first cladding region comprising a first conductivity type gallium nitride-based semiconductor; a second cladding region comprising a second conductivity type gallium nitride-based semiconductor; and a core semiconductor region comprising an active layer and a carrier block layer, a c-axis of the hexagonal gallium nitride semiconductor being directed along a direction different from a normal axis normal to a primary surface of the support substrate, and a plane defined by the c-axis of the hexagonal gallium nitride semiconductor and the normal axis to the support substrate extending along a predetermined direction, the core semiconductor region being provided between the first cladding region and the second cladding region, the core semiconductor region, the first cladding region, and the second cladding region being mounted on the primary surface of the support substrate, the first cladding region including an AlGaN cladding layer and an InAlGaN cladding layer, the InAlGaN cladding layer of the first cladding region being provided between the active layer and the AlGaN cladding layer of the first cladding region, and the InAlGaN cladding layer of the first cladding region making a junction with the core semiconductor region.