Patent ID: 6555167
Filing Date: 2003-04-29
Classification: C23C,C30B

Abstract:
A method for growing a group-III nitride film on a substrate by a metal organic chemical vapor deposition method, comprising the steps of:forming a group-III nitride buffer layer on the substrate in a reactor; forming a first group-III nitride film directly on the group-III nitride buffer layer by increasing the internal pressure of the reactor to a first pressure in the range of 150 to 400 Torr; and forming a second group-III nitride film on the first group-III nitride film by decreasing the internal pressure of the reactor to a second pressure in the range of 50 to 150 Torr, wherein the first pressure is higher than the second pressure and wherein the step of forming the second group-III nitride film on the first group-III nitride film is the final group-III nitride film growth step of the method.