Patent ID: 6580098
Filing Date: 2003-06-17
Classification: C30B,H01L

Abstract:
A group III nitride compound semiconductor comprising:a substrate; a first group III nitride compound semiconductor layer Alx1Gay1In1-x1-y1N (0&lE;x1&lE;1, 0&lE;y1&lE;1, 0&lE;x1+y1&lE;1) formed on said substrate into an island pattern such as a dot pattern, a striped pattern, or a grid pattern such that substrate-exposed portions are formed in a scattered manner; and a second group III nitride compound semiconductor layer Alx2Gay2In1-x2-y2N (0&lE;x2&lE;1, 0&lE;y2&lE;1, 0&lE;x2+y2&lE;1) which causes epitaxial growth from an island or islands of said first group III nitride compound semiconductor layer serving as nuclei (seeds) so that said second group III nitride compound semiconductor layer has no chemical binding to said substrate-exposed portions and connects adjacent ones of said first group III nitride compound semiconductor layer.