Patent ID: 6069021
Filing Date: 2000-05-30
Classification: H01L

Abstract:
A method of growing a group III nitride semiconductor crystal layer comprising:a step of growing a first buffer layer composed of boron phosphide (composition formula: BP) on a silicon (Si) single crystal substrate by a vapor phase growth method at a temperature of not lower than 200.degree. C. and not higher than 700.degree. C.,a step of growing a second buffer layer composed of boron phosphide on the first buffer layer by a vapor phase growth method at a temperature of not lower than 750.degree. C. and not higher than 1200.degree. C., anda step of growing a crystal layer composed of group III nitride semiconductor crystal represented by general formula Al.sub.p Ga.sub.q In.sub.r N (where 0.ltoreq.p.ltoreq.1, 0.ltoreq.q.ltoreq.1, 0r.ltoreq.1, p+q+r=1) on the second buffer layer by a vapor phase growth method.