Patent ID: 9601337
Date: 2017-03-21
CPC Classifications: H01L

Claim:
1. A manufacturing method of a graphene modulated high-k oxide and metal gate Ge-based MOS device, characterized in that the manufacturing method at least comprises the following steps: 1) introducing a graphene thin film on a Ge-based substrate, the graphene thin film is used as a passivation layer to inhibit the formation of instable oxide GeOx in the Ge-based substrate and to stop mutual diffusion between the high-k gate dielectric and the Ge-based substrate; 2) conducting fluorination treatment to the graphene thin film to form a fluorinated graphene insulating thin layer; 3) activating the surface of the fluorinated graphene by adopting ozone plasmas, and then forming a high-k gate dielectric on the surface of the fluorinated graphene through an atomic layer deposition technology; 4) forming a metal electrode on the surface of the high-k gate dielectric.