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    Stabilization of flatband voltages and threshold voltages in hafnium oxide based silicon transistors for CMOS
    5.
    发明申请
    Stabilization of flatband voltages and threshold voltages in hafnium oxide based silicon transistors for CMOS 有权
    用于CMOS的基于铪氧化物的硅晶体管中的平带电压和阈值电压的稳定性

    公开(公告)号：US20060244035A1

    公开(公告)日：2006-11-02

    申请号：US11118521

    申请日：2005-04-29

    申请人： Nestor Bojarczuk ,  Michael Chudzik ,  Matthew Copel ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi Paruchuri

    发明人： Nestor Bojarczuk ,  Michael Chudzik ,  Matthew Copel ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi Paruchuri

    IPC分类号： H01L29/76

    CPC分类号： H01L21/28167 ,  H01L21/28185 ,  H01L21/28194 ,  H01L29/4966 ,  H01L29/517

    摘要： The present invention provides a metal stack structure that stabilizes the flatband voltage and threshold voltages of material stacks that include a Si-containing conductor and a Hf-based dielectric. This present invention stabilizes the flatband voltages and the threshold voltages by introducing a rare earth metal-containing layer into the material stack that introduces, via electronegativity differences, a shift in the threshold voltage to the desired voltage. Specifically, the present invention provides a metal stack comprising a hafnium-based dielectric; a rare earth metal-containing layer located atop of, or within, said hafnium-based dielectric; an electrically conductive capping layer located above said hafnium-based dielectric; and a Si-containing conductor.

    摘要翻译： 本发明提供一种金属堆叠结构，其稳定包括含Si导体和Hf基电介质的材料堆叠的平带电压和阈值电压。 本发明通过将含稀土金属的层引入材料堆中来稳定平带电压和阈值电压，其通过电负性差异将阈值电压的偏移引入期望的电压。 具体地说，本发明提供一种包含铪基电介质的金属叠层; 位于所述铪基电介质的顶部或内部的含稀土金属的层; 位于所述铪基电介质上方的导电覆盖层; 和含Si导体。

    Introduction of metal impurity to change workfunction of conductive electrodes
    10.
    发明申请
    Introduction of metal impurity to change workfunction of conductive electrodes 有权
    引入金属杂质来改变导电电极的功能

    公开(公告)号：US20070173008A1

    公开(公告)日：2007-07-26

    申请号：US11336727

    申请日：2006-01-20

    申请人： Michael Chudzik ,  Bruce Doris ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi Paruchuri ,  Yun Wang ,  Keith Wong

    发明人： Michael Chudzik ,  Bruce Doris ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi Paruchuri ,  Yun Wang ,  Keith Wong

    IPC分类号： H01L21/8238

    CPC分类号： H01L29/517 ,  H01L21/28088 ,  H01L21/823828 ,  H01L21/823857 ,  H01L29/4966 ,  H01L29/513 ,  H01L29/78 ,  H01L2924/0002 ,  H01L2924/00

    摘要： Semiconductor structures, such as, for example, field effect transistors (FETs) and/or metal-oxide-semiconductor capacitor (MOSCAPs), are provided in which the workfunction of a conductive electrode stack is changed by introducing metal impurities into a metal-containing material layer which, together with a conductive electrode, is present in the electrode stack. The choice of metal impurities depends on whether the electrode is to have an n-type workfunction or a p-type workfunction. The present invention also provides a method of fabricating such semiconductor structures. The introduction of metal impurities can be achieved by codeposition of a layer containing both a metal-containing material and workfunction altering metal impurities, forming a stack in which a layer of metal impurities is present between layers of a metal-containing material, or by forming a material layer including the metal impurities above and/or below a metal-containing material and then heating the structure so that the metal impurities are introduced into the metal-containing material.

    摘要翻译： 提供半导体结构，例如场效应晶体管（FET）和/或金属氧化物半导体电容器（MOSCAP），其中通过将金属杂质引入到含金属的物质中来改变导电电极堆叠的功函数 材料层与导电电极一起存在于电极堆叠中。 金属杂质的选择取决于电极是否具有n型功函数或p型功函数。 本发明还提供一种制造这种半导体结构的方法。 金属杂质的引入可以通过共沉积含有金属的材料和改变金属杂质的功函数的层来形成，形成其中金属杂质层存在于含金属材料的层之间的叠层，或通过形成 包括在含金属材料上方和/或下面的金属杂质的材料层，然后加热该结构，使得金属杂质被引入到含金属的材料中。