公开(公告)号：US10522655B2

公开(公告)日：2019-12-31

申请号：US15711674

申请日：2017-09-21

Applicant: GLOBALFOUNDRIES Inc.

Inventor： George Robert Mulfinger ,  Ryan Sporer ,  Rick J. Carter ,  Peter Baars ,  Hans-Jürgen Thees ,  Jan Höntschel

IPC: H01L29/66 ,  H01L21/8238 ,  H01L21/84 ,  H01L27/092 ,  H01L27/12 ,  H01L29/78 ,  H01L29/08

Abstract: A method of forming matched PFET/NFET spacers with differential widths for SG and EG structures and a method of forming differential width nitride spacers for SG NFET and SG PFET structures and PFET/NFET EG structures and respective resulting devices are provided. Embodiments include providing PFET SG and EG structures and NFET SG and EG structures; forming a first nitride layer over the substrate; forming an oxide liner; forming a second nitride layer on sidewalls of the PFET and NFET EG structures; removing horizontal portions of the first nitride layer and the oxide liner over the PFET SG and EG structures; forming RSD structures on opposite sides of each of the PFET SG and EG structures; removing horizontal portions of the first nitride layer and the oxide liner over the NFET SG and EG structures; and forming RSD structures on opposite sides of each of the NFET SG and EG structures.

公开(公告)号：US09806170B1

公开(公告)日：2017-10-31

申请号：US15151550

申请日：2016-05-11

Applicant: GLOBALFOUNDRIES Inc.

Inventor： George Robert Mulfinger ,  Ryan Sporer ,  Rick J. Carter ,  Peter Baars ,  Hans-Jürgen Thees ,  Jan Höntschel

IPC: H01L21/20 ,  H01L21/336 ,  H01L21/8238 ,  H01L29/06 ,  H01L29/66 ,  H01L21/84 ,  H01L27/092 ,  H01L27/12 ,  H01L29/08 ,  H01L29/16 ,  H01L29/161 ,  H01L29/78

CPC classification number: H01L29/6656 ,  H01L21/823807 ,  H01L21/823814 ,  H01L21/823864 ,  H01L21/84 ,  H01L27/092 ,  H01L27/1203 ,  H01L29/0847 ,  H01L29/16 ,  H01L29/161 ,  H01L29/665 ,  H01L29/6653 ,  H01L29/66628 ,  H01L29/7838

Abstract: A method of forming matched PFET/NFET spacers with differential widths for SG and EG structures and a method of forming differential width nitride spacers for SG NFET and SG PFET structures and PFET/NFET EG structures and respective resulting devices are provided. Embodiments include providing PFET SG and EG structures and NFET SG and EG structures; forming a first nitride layer over the substrate; forming an oxide liner; forming a second nitride layer on sidewalls of the PFET and NFET EG structures; removing horizontal portions of the first nitride layer and the oxide liner over the PFET SG and EG structures; forming RSD structures on opposite sides of each of the PFET SG and EG structures; removing horizontal portions of the first nitride layer and the oxide liner over the NFET SG and EG structures; and forming RSD structures on opposite sides of each of the NFET SG and EG structures.