发明授权
- 专利标题: High-k gate dielectric and method of manufacture
- 专利标题(中): 高k栅介质及其制造方法
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申请号: US11835263申请日: 2007-08-07
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公开(公告)号: US07998820B2公开(公告)日: 2011-08-16
- 发明人: Chen-Hua Yu , Liang-Gi Yao
- 申请人: Chen-Hua Yu , Liang-Gi Yao
- 申请人地址: TW Hsin-Chu
- 专利权人: Taiwan Semiconductor Manufacturing Company, Ltd.
- 当前专利权人: Taiwan Semiconductor Manufacturing Company, Ltd.
- 当前专利权人地址: TW Hsin-Chu
- 代理机构: Haynes and Boone, LLP
- 主分类号: H01L21/336
- IPC分类号: H01L21/336
摘要:
A device and method of formation are provided for a high-k gate dielectric and gate electrode. The high-k dielectric material is formed, and a silicon-rich film is formed over the high-k dielectric material. The silicon-rich film is then treated through either oxidation or nitridation to reduce the Fermi-level pinning that results from both the bonding of the high-k material to the subsequent gate conductor and also from a lack of oxygen along the interface of the high-k dielectric material and the gate conductor. A conductive material is then formed over the film through a controlled process to create the gate conductor.
公开/授权文献
- US20090042381A1 High-K Gate Dielectric and Method of Manufacture 公开/授权日:2009-02-12
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