Deposition of tungsten films
    10.
    发明授权
    Deposition of tungsten films 失效
    沉积钨膜

    公开(公告)号:US06827978B2

    公开(公告)日:2004-12-07

    申请号:US10074898

    申请日:2002-02-11

    IPC分类号: C23C1614

    摘要: A method of forming a composite tungsten film on a substrate is described. The composite tungsten film comprises sequentially deposited tungsten nucleation layers and tungsten bulk layers. Each of the tungsten nucleation layers and the tungsten bulk layers have a thickness less than about 300 Å. The tungsten nucleation layers and the tungsten bulk layers are formed one over the other until a desired thickness for the composite tungsten film is achieved. The resulting composite tungsten film exhibits good film morphology. The tungsten nucleation layers may be formed using a cyclical deposition process by alternately adsorbing a tungsten-containing precursor and a reducing gas on the substrate. The tungsten bulk layers may be formed using a chemical vapor deposition (CVD) process by thermally decomposing a tungsten-containing precursor.

    摘要翻译: 描述了在基板上形成复合钨膜的方法。 复合钨膜包括顺序沉积的钨成核层和钨体层。 每个钨成核层和钨体层具有小于约的厚度。 钨成核层和钨本体层之间形成一个直到形成用于复合钨膜的期望厚度。 所得的复合钨膜表现出良好的膜形态。 可以通过在基板上交替吸附含钨前体和还原气体的循环沉积工艺来形成钨成核层。 钨体层可以通过热分解含钨前体的化学气相沉积(CVD)工艺来形成。