Invention Grant
US07816261B2 MOSFETS comprising source/drain recesses with slanted sidewall surfaces, and methods for fabricating the same
有权
包括具有倾斜侧壁表面的源极/漏极凹部的MOSFET,及其制造方法
- Patent Title: MOSFETS comprising source/drain recesses with slanted sidewall surfaces, and methods for fabricating the same
- Patent Title (中): 包括具有倾斜侧壁表面的源极/漏极凹部的MOSFET,及其制造方法
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Application No.: US11928356Application Date: 2007-10-30
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Publication No.: US07816261B2Publication Date: 2010-10-19
- Inventor: Huilong Zhu , Hong Lin
- Applicant: Huilong Zhu , Hong Lin
- 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 Joseph P. Abate, Esq.
- Main IPC: H01L21/44
- IPC: H01L21/44

Abstract:
The present invention relates to improved metal-oxide-semiconductor field effect transistor (MOSFET) devices with stress-inducing structures located at the source and drain (S/D) regions. Specifically, each MOSFET comprises source and drain regions located in a semiconductor substrate. Such source and drain regions comprise recesses with one or more sidewall surfaces that are slanted in relation to an upper surface of the semiconductor substrate. A stress-inducing dielectric layer is located over the slanted sidewall surfaces of the recesses at the source and drain regions. Such MOSFETs can be readily formed by crystallographic etching of the semiconductor substrate to form the recesses with the slanted sidewall surfaces, followed by deposition of a stress-inducing dielectric layer thereover.
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