Patent ID: 11948983
Assignee: XIDIAN UNIVERSITY
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The SiC ohmic contact preparation method according to claim 1, wherein the depositing an Au material on the Au film exposed by the second transfer electrode pattern comprises:
using an electron beam evaporation to deposit the Au material with a thickness of 200˜300 nm on the Au film exposed by the second transfer electrode pattern, and process conditions including that: a molybdenum crucible is used, a temperature of a composite structure with the Au film and the graphene/SiC structure is dropped to room temperature at a vacuum level of 10−7 Torr, an evaporation distance is 60 cm, a voltage of an electron gun is 10 kV, a current of the electron gun is 1 A, and an evaporation rate is 1 nm/s.