发明申请
US20070138570A1 Formation of raised source/drain structures in NFET with embedded SiGe in PFET
有权
在PFET中嵌入SiGe的NFET中形成凸起的源极/漏极结构
- 专利标题: Formation of raised source/drain structures in NFET with embedded SiGe in PFET
- 专利标题(中): 在PFET中嵌入SiGe的NFET中形成凸起的源极/漏极结构
-
申请号: US11305584申请日: 2005-12-16
-
公开(公告)号: US20070138570A1公开(公告)日: 2007-06-21
- 发明人: Yung Chong , Zhijiong Luo , Joo Kim , Judson Holt
- 申请人: Yung Chong , Zhijiong Luo , Joo Kim , Judson Holt
- 专利权人: Chartered Semiconductor Mfg.LTD,International Business Machines Corp,Samsung Electronics
- 当前专利权人: Chartered Semiconductor Mfg.LTD,International Business Machines Corp,Samsung Electronics
- 主分类号: H01L29/76
- IPC分类号: H01L29/76 ; H01L21/8238
摘要:
A structure and method for forming raised source/drain structures in a NFET device and embedded SiGe source/drains in a PFET device. We provide a NFET gate structure over a NFET region in a substrate and PFET gate structure over a PFET region. We provide NFET SDE regions adjacent to the NFET gate and provide PFET SDE regions adjacent to the PFET gate. We form recesses in the PFET region in the substrate adjacent to the PFET second spacers. We form a PFET embedded source/drain stressor in the recesses. We form a NFET S/D epitaxial Si layer over the NFET SDE regions and a PFET S/D epitaxial Si layer over PFET embedded source/drain stressor. The epitaxial Si layer over PFET embedded source/drain stressor is consumed in a subsequent salicide step to form a stable and low resistivity silicide over the PFET embedded source/drain stressor. We perform a NFET S/D implant by implanting N-type ions into NFET region adjacent to the NFET gate structure and into the NFET S/D stressor Si layer to form the raised NFET source/drains.
公开/授权文献
信息查询
IPC分类: