Patent ID: 11935744
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 9:
10. A method for manufacturing a nitride semiconductor device, comprising:
growing a GaN channel layer on an SiC substrate in a vertical MOCVD furnace set at a first temperature, the vertical MOCVD furnace being supplied with TMG (trimethylgallium) and NH3 as raw materials, and H2 as a carrier gas;
holding the SiC substrate including the grown GaN channel layer at a second temperature of 1000° C. or higher and lower than 1100° C. in the vertical MOCVD furnace, the second temperature being equal to or lower than the first temperature, and the vertical MOCVD furnace being supplied with H2 as a carrier gas, NH3, and TMI (trimethylindium) instead of TMG; and
growing an InAlN layer on the GaN channel layer in the vertical MOCVD furnace set at a third temperature lower than the second temperature, the vertical MOCVD furnace being supplied with TMI, TMA (trimethylaluminum), and NH3 as raw materials, and N2 as a carrier gas.