Method for forming crystalline silicon nitride
    9.
    发明授权
    Method for forming crystalline silicon nitride 失效
    形成结晶氮化硅的方法

    公开(公告)号:US06707086B1

    公开(公告)日:2004-03-16

    申请号:US09594638

    申请日:2000-06-15

    IPC分类号: H01L31119

    摘要: In accordance with the present invention, a method for forming a crystalline silicon nitride layer, includes the steps of providing a crystalline silicon substrate with an exposed surface, precleaning the exposed surface by employing a hydrogen prebake and exposing the exposed surface to nitrogen to form a crystalline silicon nitride layer. Also, a trench capacitor, in accordance with the present invention, includes a crystalline silicon substrate including deep trenches having surface substantially free of native oxide. A dielectric stack, including a crystalline silicon nitride layer, is formed on the sidewalls of the trenches. The dielectric stack forms a node dielectric between electrodes of the trench capacitor.

    摘要翻译: 根据本发明,用于形成结晶氮化硅层的方法包括以下步骤:提供具有暴露表面的晶体硅衬底,通过使用氢预烘烤并将暴露表面暴露于氮以形成暴露表面, 晶体氮化硅层。 此外,根据本发明的沟槽电容器包括晶体硅衬底,其包括具有基本上不含天然氧化物的表面的深沟槽。 在沟槽的侧壁上形成包括结晶氮化硅层的电介质叠层。 电介质叠层在沟槽电容器的电极之间形成节点电介质。