Metal Gate Stack Formation for Replacement Gate Technology
    1.
    发明申请
    Metal Gate Stack Formation for Replacement Gate Technology 有权
    用于替代门技术的金属门堆叠形成

    公开(公告)号:US20120315749A1

    公开(公告)日:2012-12-13

    申请号:US13154578

    申请日:2011-06-07

    IPC分类号: H01L21/336

    摘要: Generally, the subject matter disclosed herein relates to modern sophisticated semiconductor devices and methods for forming the same, wherein a reduced threshold voltage (Vt) may be achieved in HK/MG transistor elements that are manufactured based on replacement gate electrode integrations. One illustrative method disclosed herein includes forming a first metal gate electrode material layer above a gate dielectric material layer having a dielectric constant of approximately 10 or greater. The method further includes exposing the first metal gate electrode material layer to an oxygen diffusion process, forming a second metal gate electrode material layer above the first metal gate electrode material layer, and adjusting an oxygen concentration gradient and a nitrogen concentration gradient in at least the first metal gate electrode material layer and the gate dielectric material layer.

    摘要翻译: 通常,本文公开的主题涉及现代复杂的半导体器件及其形成方法,其中可以在基于替换栅极集成制造的HK / MG晶体管元件中实现降低的阈值电压(Vt)。 本文公开的一种说明性方法包括在介电常数约为10或更大的栅介质材料层上形成第一金属栅电极材料层。 该方法还包括将第一金属栅电极材料层暴露于氧扩散过程,在第一金属栅电极材料层上方形成第二金属栅电极材料层,并且至少在第一金属栅电极材料层上调整氧浓度梯度和氮浓度梯度 第一金属栅电极材料层和栅介质材料层。

    REDUCING EQUIVALENT THICKNESS OF HIGH-K DIELECTRICS IN FIELD EFFECT TRANSISTORS BY PERFORMING A LOW TEMPERATURE ANNEAL
    7.
    发明申请
    REDUCING EQUIVALENT THICKNESS OF HIGH-K DIELECTRICS IN FIELD EFFECT TRANSISTORS BY PERFORMING A LOW TEMPERATURE ANNEAL 审中-公开
    通过执行低温天线降低场效应晶体管中高K电介质的等效厚度

    公开(公告)号:US20120238086A1

    公开(公告)日:2012-09-20

    申请号:US13422221

    申请日:2012-03-16

    IPC分类号: H01L21/28

    摘要: When forming sophisticated high-k metal gate electrode structures, for instance on the basis of a replacement gate approach, superior interface characteristics may be obtained on the basis of using a thermally grown base material, wherein the electrically effective thickness may be reduced on the basis of a low temperature anneal process. Consequently, the superior interface characteristics of a thermally grown base material may be provided without requiring high temperature anneal processes, as are typically applied in conventional strategies using a very thin oxide layer formed on the basis of a wet oxidation chemistry.

    摘要翻译: 当形成复杂的高k金属栅极电极结构时,例如基于替代栅极方法,可以在使用热生长的基材的基础上获得优异的界面特性,其中可以基于 的低温退火工艺。 因此,可以提供热生长的基材的优异的界面特性,而不需要高温退火工艺,如通常在使用基于湿氧化学化学形成的非常薄的氧化物层的常规策略中应用的那样。

    Metal gate stack formation for replacement gate technology
    8.
    发明授权
    Metal gate stack formation for replacement gate technology 有权
    用于替代栅极技术的金属栅极叠层形成

    公开(公告)号:US08664103B2

    公开(公告)日:2014-03-04

    申请号:US13154578

    申请日:2011-06-07

    IPC分类号: H01L21/3205

    摘要: Generally, the subject matter disclosed herein relates to modern sophisticated semiconductor devices and methods for forming the same, wherein a reduced threshold voltage (Vt) may be achieved in HK/MG transistor elements that are manufactured based on replacement gate electrode integrations. One illustrative method disclosed herein includes forming a first metal gate electrode material layer above a gate dielectric material layer having a dielectric constant of approximately 10 or greater. The method further includes exposing the first metal gate electrode material layer to an oxygen diffusion process, forming a second metal gate electrode material layer above the first metal gate electrode material layer, and adjusting an oxygen concentration gradient and a nitrogen concentration gradient in at least the first metal gate electrode material layer and the gate dielectric material layer.

    摘要翻译: 通常,本文公开的主题涉及现代复杂的半导体器件及其形成方法,其中可以在基于替换栅极集成制造的HK / MG晶体管元件中实现降低的阈值电压(Vt)。 本文公开的一种说明性方法包括在介电常数约为10或更大的栅介质材料层上形成第一金属栅电极材料层。 该方法还包括将第一金属栅电极材料层暴露于氧扩散过程,在第一金属栅电极材料层上形成第二金属栅电极材料层,并且至少在第一金属栅电极材料层上调整氧浓度梯度和氮浓度梯度 第一金属栅电极材料层和栅介质材料层。

    Work function adjustment in a high-K gate electrode structure after transistor fabrication by using lanthanum
    10.
    发明授权
    Work function adjustment in a high-K gate electrode structure after transistor fabrication by using lanthanum 有权
    通过使用镧在晶体管制造后的高K栅电极结构中的功函数调整

    公开(公告)号:US08653605B2

    公开(公告)日:2014-02-18

    申请号:US13689992

    申请日:2012-11-30

    IPC分类号: H01L21/70 H01L27/088

    摘要: The work function of a high-k gate electrode structure may be adjusted in a late manufacturing stage on the basis of a lanthanum species in an N-channel transistor, thereby obtaining the desired high work function in combination with a typical conductive barrier material, such as titanium nitride. For this purpose, in some illustrative embodiments, the lanthanum species may be formed directly on the previously provided metal-containing electrode material, while an efficient barrier material may be provided in the P-channel transistor, thereby avoiding undue interaction of the lanthanum species in the P-channel transistor.

    摘要翻译: 高k栅电极结构的功函数可以在后期制造阶段基于N沟道晶体管中的镧种类进行调整,从而获得与典型的导电阻挡材料结合的期望的高功函数,例如 作为氮化钛。 为此,在一些说明性实施例中,可以在先前提供的含金属的电极材料上直接形成镧类物质,同时可以在P沟道晶体管中提供有效的阻挡材料,从而避免镧类物质的过度相互作用 P沟道晶体管。