Patent ID: 7863178

Claim:
A method for manufacturing a GaN based optical device, the method comprising the steps of: growing a p-type nitride semiconductor layer using NH 3 and a hydrazine based source as a nitrogen precursor; and doping the p-type nitride semiconductor layer with magnesium (Mg), wherein the p-type nitride semiconductor layer includes gallium and the molar flow ratio of hydrazine based source and gallium (Ga)(V(hydrazine based source) /III(gallium)) is in a range of 1 to 300; the p-type nitride semiconductor layer includes gallium and the molar flow ratio of NH 3 and gallium (Ga) (V(ammonia) /III(gallium)) is in a range of 100 to 8000; the p-type nitride semiconductor layer is grown at a temperature of 700Â° C. to 1100Â° C. and at a pressure of 20 torr to 760 torr; the p-type nitride semiconductor layer has a thickness of 10 â„« to 10000 â„«; and the p-type nitride semiconductor layer exists on an active layer that generates light by recombining holes and electrons.