Patent ID: 11881505
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 4:
5. A semiconductor structure, comprising:
a fin including a nanosheet stack epitaxially grown on a semiconductor substrate;
a first liner within a recess in the semiconductor substrate located between adjacent fins, the first liner comprising a first oxide material;
a second liner directly above the first liner;
a third liner directly above the second liner, the third liner comprising a nitride material, wherein the second liner comprises a second oxide material capable of creating a dipole effect that neutralizes positive charges generated within the third liner and between the third liner and the first liner; and
a shallow trench isolation layer comprising a dielectric material directly above the third liner, the dielectric material filling a remaining space within the recess to form a shallow trench isolation region within the semiconductor substrate between the adjacent fins.