Invention Grant
- Patent Title: Embedded stressor structure and process
- Patent Title (中): 嵌入式应力器结构与过程
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Application No.: US11297522Application Date: 2005-12-08
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Publication No.: US07939413B2Publication Date: 2011-05-10
- Inventor: Yung Fu Chong , Zhijiong Luo , Joo Chan Kim , Brian Joseph Greene , Kern Rim
- Applicant: Yung Fu Chong , Zhijiong Luo , Joo Chan Kim , Brian Joseph Greene , Kern Rim
- Applicant Address: KR SG Singapore
- Assignee: Samsung Electronics Co., Ltd.,Chartered Semiconductor Manufacturing, Ltd.,International Business Machines Corp (IBM)
- Current Assignee: Samsung Electronics Co., Ltd.,Chartered Semiconductor Manufacturing, Ltd.,International Business Machines Corp (IBM)
- Current Assignee Address: KR SG Singapore
- Agency: Horizon IP Pte Ltd
- Main IPC: H01L21/336
- IPC: H01L21/336

Abstract:
An example embodiments are structures and methods for forming an FET with embedded stressor S/D regions (e.g., SiGe), a doped layer below the embedded S/D region adjacent to the isolation regions, and a stressor liner over reduced spacers of the FET gate. An example method comprising the following. We provide a gate structure over a first region in a substrate. The gate structure is comprised of gate dielectric, a gate, and sidewall spacers. We provide isolation regions in the first region spaced from the gate structure; and a channel region in the substrate under the gate structure. We form S/D recesses in the first region in the substrate adjacent to the sidewall spacers. We form S/D stressor regions filling the S/D recesses. The S/D stressor regions can be thicker adjacent to the gate structure than adjacent to the isolation regions; We implant dopant ions into the S/D stressor regions and into the substrate below the S/D stressor regions adjacent to the isolation regions to form upper stressor doped regions.
Public/Granted literature
- US20070132038A1 Embedded stressor structure and process Public/Granted day:2007-06-14
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