MOS transistor gates with thin lower metal silicide and methods for making the same
    1.
    发明申请
    MOS transistor gates with thin lower metal silicide and methods for making the same 有权
    具有薄的下金属硅化物的MOS晶体管栅极及其制造方法

    公开(公告)号:US20050136605A1

    公开(公告)日:2005-06-23

    申请号:US10745454

    申请日:2003-12-22

    摘要: Methods are presented for fabricating transistor gate structures, wherein upper and lower metal suicides are formed above a gate dielectric. In one example, the lower silicide is formed by depositing a thin first silicon-containing material over the gate dielectric, which is implanted and then reacted with a first metal by annealing to form the lower silicide. A capping layer can be formed over the first metal prior to annealing, to prevent oxidation of the metal prior to silicidation, and a barrier layer can be formed over the lower silicide to prevent reaction with subsequently formed silicon material. In another example, the lower silicide is a multilayer silicide structure including a plurality of metal silicide sublayers.

    摘要翻译: 呈现用于制造晶体管栅极结构的方法,其中上和下金属硅化物形成在栅极电介质上方。 在一个示例中,下硅化物通过在栅极电介质上沉积薄的第一含硅材料而形成,其被注入,然后通过退火与第一金属反应以形成下硅化物。 在退火之前可以在第一金属上形成覆盖层,以防止在硅化物之前金属的氧化,并且可以在下硅化物上形成阻挡层以防止随后形成的硅材料的反应。 在另一个实例中,下硅化物是包括多个金属硅化物层的多层硅化物结构。

    Dual work function gate electrodes obtained through local thickness-limited silicidation
    2.
    发明申请
    Dual work function gate electrodes obtained through local thickness-limited silicidation 有权
    通过局部厚度限制硅化获得的双功能功能栅电极

    公开(公告)号:US20060019437A1

    公开(公告)日:2006-01-26

    申请号:US10897846

    申请日:2004-07-23

    IPC分类号: H01L21/8238

    摘要: The present invention provides a method of manufacturing a semiconductor device. The semiconductor device (100), among other possible elements, includes a first transistor (120) located over a semiconductor substrate (110), wherein the first transistor (120) has a gate electrode (135) that includes a metal silicide layer 135a over which is located a silicon gate layer (135b) together which have a work function associated therewith, and a second transistor (125) located over the semiconductor substrate (110) and proximate the first transistor (120), wherein the second transistor (125) also includes a gate electrode (160) that includes a metal silicide layer (160a) over which is located a silicon gate layer (160b) together which have a different work function from that of the first gate electrode (135) associated therewith.

    摘要翻译: 本发明提供一种制造半导体器件的方法。 除了其它可能的元件之外,半导体器件(100)包括位于半导体衬底(110)上方的第一晶体管(120),其中第一晶体管(120)具有包括金属硅化物层135a的栅电极(135) 位于硅栅极层(135b)上,其具有与其相关联的功函数;以及第二晶体管(125),位于半导体衬底(110)之上且靠近第一晶体管(120),其中第二晶体管 125)还包括栅电极(160),其包括金属硅化物层(160a),栅极电极(160a)位于硅栅极层(160b)上,其具有与第一栅电极(135)的功函数不同的功函 随之而来。