Invention Grant
- Patent Title: Disposable spacer integration with stress memorization technique and silicon-germanium
- Patent Title (中): 应力记忆技术和硅锗的一次性间隔物整合
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Application No.: US12549862Application Date: 2009-08-28
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Publication No.: US08114727B2Publication Date: 2012-02-14
- Inventor: Weize Xiong , Zhiqiang Wu , Xin Wang
- Applicant: Weize Xiong , Zhiqiang Wu , Xin Wang
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Jacqueline J. Garner; Wade J. Brady, III; Frederick J. Telecky, Jr.
- Main IPC: H01L21/00
- IPC: H01L21/00

Abstract:
An integrated process flow for forming an NMOS transistor (104) and an embedded SiGe (eSiGe) PMOS transistor (102) using a stress memorization technique (SMT) layer (126). The SMT layer (126) is deposited over both the NMOS transistor (104) and PMOS transistor (102). The portion of SMT layer (126) over PMOS transistor (102) is anisotropically etched to form spacers (128) without etching the portion of SMT layer (126) over NMOS transistor (104). Spacers (128) are used to align the SiGe recess etch and growth to form SiGe source/drain regions (132). The source/drain anneals are performed after etching the SMT layer (126) such that SMT layer (126) provides the desired stress to the NMOS transistor (104) without degrading PMOS transistor (102).
Public/Granted literature
- US20110070703A1 Disposable Spacer Integration with Stress Memorization Technique and Silicon-Germanium Public/Granted day:2011-03-24
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