Patent ID: 6713789
Filing Date: 2004-03-30
Classification: C30B,H01L

Abstract:
A group III nitride compound semiconductor device, comprising:a substrate; a first group III nitride compound layer having a thickness of from 50 Ã¥ to 3000 Ã¥ and being formed on said substrate by a method not using metal organic compounds as raw materials; and a second group III nitride compound semiconductor layer being formed on said first group III nitride compound layer, wherein said substrate is at a temperature not less than 400Â° C. when said first group III nitride compound semiconductor layer is formed thereon, and wherein said first group III nitride compound semiconductor layer is subjected to a heat treatment in a range of 1050Â° C. to 1200Â° C. before said second group III nitride compound semiconductor layer is formed thereon.