Patent ID: 11915937
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method comprising:
forming nanostructures over a substrate;
forming a first dielectric layer over the substrate and around the nanostructures;
forming a second dielectric layer over the first dielectric layer;
depositing a first conductive material over the second dielectric layer;
forming a fluorine-containing layer over the first conductive material;
diffusing fluorine from the fluorine-containing layer into the second dielectric layer, wherein diffusing fluorine changes a breakdown voltage of the first dielectric layer and the second dielectric layer;
removing the fluorine-containing layer, wherein removing the fluorine-containing layer comprises removing a portion of the first conductive material; and
forming a second conductive material over the second dielectric layer.