Method for producing gate stack sidewall spacers
    43.
    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。