发明授权
- 专利标题: Integration of fin-based devices and ETSOI devices
- 专利标题(中): 集成了鳍式设备和ETSOI设备
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申请号: US13050023申请日: 2011-03-17
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公开(公告)号: US08236634B1公开(公告)日: 2012-08-07
- 发明人: Narasimhulu Kanike , Kangguo Cheng , Ramachandra Divakaruni , Carl J. Radens
- 申请人: Narasimhulu Kanike , Kangguo Cheng , Ramachandra Divakaruni , Carl J. Radens
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Scully, Scott, Murphy & Presser, P.C.
- 代理商 H. Daniel Schnurmann
- 主分类号: H01L27/088
- IPC分类号: H01L27/088
摘要:
Thin semiconductor regions and thick semiconductor regions are formed oven an insulator layer. Thick semiconductor regions include at least one semiconductor fin. A gate conductor layer is patterned to form disposable planar gate electrodes over ETSOI regions and disposable side gate electrodes on sidewalls of semiconductor fins. End portions of the semiconductor fins are vertically recessed to provide thinned fin portions adjacent to an unthinned fin center portion. After appropriate masking by dielectric layers, selective epitaxy is performed on planar source and drain regions of ETSOI field effect transistors (FETs) to form raised source and drain regions. Further, fin source and drain regions are grown on the thinned fin portions. Source and drain regions, fins, and the disposable gate electrodes are planarized. The disposable gate electrodes are replaced with metal gate electrodes. FinFETs and ETSOI FETs are provided on the same semiconductor substrate.
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