Patent ID: 11908902
Assignee: SUMITOMO CHEMICAL COMPANY LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A group III nitride laminate, comprising:
an underlying substrate, which is a silicon carbide substrate or a sapphire substrate,
a first layer including aluminum nitride provided on the underlying substrate, and
a second layer including gallium nitride provided on the first layer;
wherein, in the first layer, a thickness is more than 100 nm and 1 μm or less, a full width at half maximum of (0002) diffraction determined through X-ray rocking curve analysis is 250 arcseconds or less, and a full width at half maximum of (10-12) diffraction determined through X-ray rocking curve analysis is 500 arcseconds or less.