High mobility tri-gate devices and methods of fabrication
    23.
    发明授权
    High mobility tri-gate devices and methods of fabrication 失效
    高移动性三栅极器件和制造方法

    公开(公告)号:US07042009B2

    公开(公告)日:2006-05-09

    申请号:US10883183

    申请日:2004-06-30

    IPC分类号: H01L27/01 H01L29/04

    摘要: A high mobility semiconductor assembly. In one exemplary aspect, the high mobility semiconductor assembly includes a first substrate having a first reference orientation located at a crystal plane location on the first substrate and a second substrate formed on top of the first substrate. The second substrate has a second reference orientation located at a crystal plane location on the second substrate, wherein the first reference orientation is aligned with the second reference orientation. In another exemplary aspect, the second substrate has a second reference orientation located at a crystal plane location on the second substrate, wherein the second substrate is formed over the first substrate with the second reference orientation being offset to the first reference orientation by about 45 degrees.

    摘要翻译: 高迁移率半导体组件。 在一个示例性方面,高迁移率半导体组件包括具有位于第一衬底上的<110>晶面位置处的第一参考取向的第一衬底和形成在第一衬底顶部上的第二衬底。 第二衬底具有位于第二衬底上的<100>晶面位置处的第二参考取向,其中第一参考取向与第二参考取向对准。 在另一示例性方面,第二衬底具有位于第二衬底上的<110>晶面位置处的第二参考取向,其中第二衬底形成在第一衬底上,第二参考取向通过 约45度。

    Metal-gate electrode for CMOS transistor applications
    26.
    发明授权
    Metal-gate electrode for CMOS transistor applications 失效
    用于CMOS晶体管应用的金属栅电极

    公开(公告)号:US06998686B2

    公开(公告)日:2006-02-14

    申请号:US10230944

    申请日:2002-08-28

    IPC分类号: H01L29/78

    摘要: Described is a CMOS transistor structure with a multi-layered gate electrode structure and a method of fabrication. The gate electrode structure has a three-layered metallic gate electrode and a polysilicon layer. The first metallic layer acts as a barrier to prevent the second metallic layer from reacting with an underlying dielectric. The second metallic layer acts to set the work function of the gate electrode structure. The third metallic layer acts as a barrier to prevent the second metallic layer from reacting with the polysilicon layer.The method of fabricating the gate electrode structure includes forming the three metallic layers thick enough that each layer provides the barrier and work-function setting functions mentioned above, but also thin enough that a subsequent wet-etch can be performed without excessive undercutting of the metallic layers. During implant and anneal processes, the polysilicon layer acts as a protective mask over the metallic layers to protect an underlying silicon substrate from interacting with dopants used during the implant process.

    摘要翻译: 描述了具有多层栅电极结构的CMOS晶体管结构和制造方法。 栅电极结构具有三层金属栅电极和多晶硅层。 第一金属层用作阻挡层以防止第二金属层与下面的电介质反应。 第二金属层用于设定栅电极结构的功函数。 第三金属层用作阻挡第二金属层与多晶硅层反应的屏障。

    Strained transistor integration for CMOS
    30.
    发明申请
    Strained transistor integration for CMOS 失效
    用于CMOS的应变晶体管集成

    公开(公告)号:US20050136584A1

    公开(公告)日:2005-06-23

    申请号:US10747321

    申请日:2003-12-23

    摘要: Various embodiments of the invention relate to a CMOS device having (1) an NMOS channel of silicon material selectively deposited on a first area of a graded silicon germanium substrate such that the selectively deposited silicon material experiences a tensile strain caused by the lattice spacing of the silicon material being smaller than the lattice spacing of the graded silicon germanium substrate material at the first area, and (2) a PMOS channel of silicon germanium material selectively deposited on a second area of the substrate such that the selectively deposited silicon germanium material experiences a compressive strain caused by the lattice spacing of the selectively deposited silicon germanium material being larger than the lattice spacing of the graded silicon germanium substrate material at the second area.

    摘要翻译: 本发明的各种实施例涉及一种CMOS器件,其具有(1)选择性地沉积在渐变硅锗衬底的第一区域上的硅材料的NMOS沟道,使得选择性沉积的硅材料经历由晶格间隔引起的拉伸应变 硅材料小于第一区域处的渐变硅锗衬底材料的晶格间距,以及(2)选择性地沉积在衬底的第二区域上的硅锗材料的PMOS沟道,使得选择性沉积的硅锗材料经历 由选择性沉积的硅锗材料的晶格间距引起的压缩应变大于第二区域处的分级硅锗衬底材料的晶格间距。