Patent ID: 7943492

Claim:
A method of forming a nitride film by hydride vapor phase epitaxy process, the method comprising: sequentially disposing at least one group III metal source including impurities and a substrate in an external reaction chamber and an internal reaction chamber sequentially located in the direction of gas supply and heating each of the external reaction chamber and the internal reaction chamber at a growth temperature; forming a metal chloride by supplying hydrogen chloride gas and carrier gas into the external reaction chamber to react with the group III metal source and transferring the metal chloride to the substrate; and forming the nitride film doped with the impurities on the substrate by reacting the transferred metal chloride with nitrogen source gas supplied to the internal reaction chamber, wherein the impurities comprise Te and the nitride film is an n type nitride film and wherein the atomic fraction of Te is more than 0.01 g/mol and the concentration of n type impurities within the nitride film is more than 5×10 17 /cm 3 .