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

Claim 2:
3. The SiC ohmic contact preparation method according to claim 1, wherein the depositing an Au film on the graphene of the graphene/SiC structure comprises:
using an electron beam evaporation to deposit the Au film with a thickness of 20˜30 nanometers (nm) on the graphene of the graphene/SiC structure, and process conditions including that: a molybdenum crucible is used, a temperature of the graphene/SiC structure is dropped to room temperature at a vacuum level of 10−7 Torr, an evaporation distance is 60 centimeters (cm), a voltage of an electron gun is 10 kilovolts (kV), a current of the electron gun is 1 ampere (A), and an evaporation rate is 1 nanometer per second (nm/s).