公开(公告)号：GB2509262B

公开(公告)日：2015-08-05

申请号：GB201404141

申请日：2012-09-14

Applicant: IBM

Inventor： CARTIER EDUARD A ,  GREENE BRIAN J ,  GUO DECHAO ,  WANG GAN ,  WANG YANFENG ,  WONG KEITH H

IPC: H01L29/66

公开(公告)号：GB2509262A

公开(公告)日：2014-06-25

申请号：GB201404141

申请日：2012-09-14

Applicant: IBM

Inventor： CARTIER EDUARD A ,  GREENE BRIAN J ,  GUO DECHAO ,  WANG GAN ,  WANG YANFENG ,  WONG KEITH H

IPC: H01L29/66

Abstract: FinFET structures and methods of manufacturing the FinFET structures are disclosed. The method includes performing an oxygen anneal process on a gate stack of a FinFET structure to induce Vt shift. The oxygen anneal process is performed after sidewall pull down and post silicide. A structure comprises a plurality of fin structures patterned from a semiconductor film. The structure further comprises a gate stack wrapping around the plurality of fin structures. The gate stack includes a high-k dielectric material subjected to a lateral oxygen diffusion to induce Vt shift of the gate stack.