发明申请
- 专利标题: MONOLAYER DOPANT EMBEDDED STRESSOR FOR ADVANCED CMOS
- 专利标题(中): 用于高级CMOS的单层掺杂嵌入式压电器
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申请号: US12764329申请日: 2010-04-21
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公开(公告)号: US20110260213A1公开(公告)日: 2011-10-27
- 发明人: Kevin K. Chan , Abhishek Dube , Judson R. Holt , Jinghong Li , Joseph S. Newbury , Viorel Ontalus , Dae-Gyu Park , Zhengmao Zhu
- 申请人: Kevin K. Chan , Abhishek Dube , Judson R. Holt , Jinghong Li , Joseph S. Newbury , Viorel Ontalus , Dae-Gyu Park , Zhengmao Zhu
- 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
- 主分类号: H01L29/772
- IPC分类号: H01L29/772 ; H01L21/335
摘要:
Semiconductor structures are disclosed that have embedded stressor elements therein. The disclosed structures include at least one FET gate stack located on an upper surface of a semiconductor substrate. The at least one FET gate stack includes source and drain extension regions located within the semiconductor substrate at a footprint of the at least one FET gate stack. A device channel is also present between the source and drain extension regions and beneath the at least one gate stack. The structure further includes embedded stressor elements located on opposite sides of the at least one FET gate stack and within the semiconductor substrate. Each of the embedded stressor elements includes a lower layer of a first epitaxy doped semiconductor material having a lattice constant that is different from a lattice constant of the semiconductor substrate and imparts a strain in the device channel, and an upper layer of a second epitaxy doped semiconductor material located atop the lower layer. The lower layer of the first epitaxy doped semiconductor material has a lower content of dopant as compared to the upper layer of the second epitaxy doped semiconductor material. The structure further includes at least one monolayer of dopant located within the upper layer of each of the embedded stressor elements. The at least one monolayer of dopant is in direct contact with an edge of either the source extension region or the drain extension region.
公开/授权文献
- US08236660B2 Monolayer dopant embedded stressor for advanced CMOS 公开/授权日:2012-08-07
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