Method for producing gate stack sidewall spacers
    91.
    发明授权
    Method for producing gate stack sidewall spacers 有权
    栅堆叠侧墙的制造方法

    公开(公告)号:US07253123B2

    公开(公告)日:2007-08-07

    申请号:US11032859

    申请日:2005-01-10

    IPC分类号: H01L21/31 H01L21/469

    摘要: A method for forming sidewall spacers on a gate stack by depositing one or more layers of silicon containing materials using PECVD process(es) on a gate structure to produce a spacer having an overall k value of about 3.0 to about 5.0. The silicon containing materials may be silicon carbide, oxygen doped silicon carbide, nitrogen doped silicon carbide, carbon doped silicon nitride, nitrogen doped silicon oxycarbide, or combinations thereof. The deposition is performed in a plasma enhanced chemical vapor deposition chamber and the deposition temperature is less than 450° C. The sidewall spacers so produced provide good capacity resistance, as well as excellent structural stability and hermeticity.

    摘要翻译: 一种用于在栅极堆叠上形成侧壁间隔物的方法,其通过在栅极结构上使用PECVD工艺沉积一层或多层含硅材料以产生具有约3.0至约5.0的总k值的间隔物。 含硅材料可以是碳化硅,氧掺杂碳化硅,氮掺杂碳化硅,碳掺杂氮化硅,氮掺杂碳氧化碳或其组合。 沉积在等离子体增强化学气相沉积室中进行,并且沉积温度低于450℃。如此制备的侧壁间隔物提供了良好的容量阻力以及良好的结构稳定性和气密性。

    Boron diffusion barrier by nitrogen incorporation in spacer dielectrics
    95.
    发明授权
    Boron diffusion barrier by nitrogen incorporation in spacer dielectrics 失效
    通过在间隔电介质中掺入氮的硼扩散势垒

    公开(公告)号:US07132353B1

    公开(公告)日:2006-11-07

    申请号:US11195398

    申请日:2005-08-02

    IPC分类号: H01L21/3205

    摘要: A method of forming a sidewall spacer on a gate electrode is described. The method includes generating a first plasma from a silicon containing precursor and oxide precursor, and forming a silicon oxy-nitride layer on the sidewall of the gate electrode. The method also includes generating a second plasma from the silicon containing precursor and a nitrogen precursor, and forming a nitride layer on the silicon oxy-nitride layer. The silicon containing precursor can flow continuously between the generation of the first and the second plasmas. Also, a method of forming a sidewall spacer on the side of a gate electrode on a substrate. The method includes forming an oxy-nitride layer on the sidewall, and forming a nitride layer on the oxy-nitride layer, where the substrate wafer is not exposed to air between the formation of the layers.

    摘要翻译: 描述了在栅极上形成侧壁间隔物的方法。 该方法包括从含硅前体和氧化物前体产生第一等离子体,并在栅电极的侧壁上形成氮氧化硅层。 该方法还包括从含硅前体和氮前体产生第二等离子体,并在氮氧化硅层上形成氮化物层。 含硅前体可以在第一和第二等离子体的产生之间连续流动。 另外,在基板上的栅电极侧形成侧墙的方法。 该方法包括在侧壁上形成氮氧化物层,并且在氧化氮化物层上形成氮化物层,其中衬底晶片在层的形成之间不暴露于空气。