Patent ID: 11894461
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A method of forming a semiconductor device, the method comprising:
forming a first interfacial layer on a semiconductor substrate;
forming a first high-k dielectric layer on the first interfacial layer; and
forming a first conductive gate electrode layer on the first high-k dielectric layer, doping at least one of the first high-k dielectric layer and the first interfacial layer with:
a first dopant species,
a second dopant species, and
a third dopant species,
wherein at least one of the first dopant species and the second dopant species forms a first dipole element having a first polarity,
wherein the third dopant species forms a second dipole element having a second polarity,
wherein the first and second polarities are opposite, and
wherein doping the at least one of the first high-k dielectric layer and the first interfacial layer with the first and second dopant species comprises:
depositing a first dopant layer comprising the first dopant species and a second dopant layer comprising the second species; and
depositing a third dopant layer comprising the third dopant species.