Patent ID: 8765222

Claim:
A method of manufacturing a p-AlGaN layer, the p-AlGaN layer being one p-Al x Ga 1-x N layer (0≦x<1) doped with magnesium, which is formed by MOCVD, comprising the steps of: a first step of supplying a Group V source gas at a Group V source gas flow rate B 1 (0<B 1 ) and supplying a gas containing magnesium at a Mg-containing gas flow rate C 1 (0<C 1 ) while supplying a Group III source gas at a Group III source gas flow rate A 3 (0<A 3 ); and a second step of supplying a Group V source gas at a Group V source gas flow rate B 2 (0<B 2 ) and supplying a gas containing magnesium at a Mg-containing gas flow rate C 2 (0<C 2 ) while supplying a Group III source gas at a Group III source gas flow rate A 2 (0<A 2 ), wherein the first step and the second step are performed to form the p-Al x Ga 1-x N layer, and the Group III source gas flow rate A 3 is a flow rate which allows only initial growth nuclei of the p-Al x Ga 1-x N layer to grow and satisfies A 3 ≦0.5A 2 .