Invention Grant
- Patent Title: Integration of fin-based devices and ETSOI devices
- Patent Title (中): 集成了鳍式设备和ETSOI设备
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Application No.: US13050023Application Date: 2011-03-17
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Publication No.: US08236634B1Publication Date: 2012-08-07
- Inventor: Narasimhulu Kanike , Kangguo Cheng , Ramachandra Divakaruni , Carl J. Radens
- Applicant: Narasimhulu Kanike , Kangguo Cheng , Ramachandra Divakaruni , Carl J. Radens
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent H. Daniel Schnurmann
- Main IPC: H01L27/088
- IPC: H01L27/088

Abstract:
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.
Information query
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