Capacitor of semiconductor device and method of fabricating the same
    27.
    发明授权
    Capacitor of semiconductor device and method of fabricating the same 有权
    半导体器件的电容器及其制造方法

    公开(公告)号:US07442981B2

    公开(公告)日:2008-10-28

    申请号:US11316487

    申请日:2005-12-21

    IPC分类号: H01L27/108 H01L29/94

    摘要: Provided is a capacitor of a semiconductor device and a method of fabricating the same. In one embodiment, the capacitor includes a lower electrode formed on a semiconductor substrate; a dielectric layer formed on the lower electrode; and an upper electrode that is formed on the dielectric layer. The upper electrode includes a first conductive layer, a second conductive layer, and a third conductive layer stacked sequentially. The first conductive layer comprises a metal layer, a conductive metal oxide layer, a conductive metal nitride layer, or a conductive metal oxynitride layer. The second conductive layer comprises a doped polysilicon germanium layer. The third conductive layer comprises a material having a lower resistance than that of the second conductive layer.

    摘要翻译: 提供一种半导体器件的电容器及其制造方法。 在一个实施例中,电容器包括形成在半导体衬底上的下电极; 形成在下电极上的电介质层; 以及形成在电介质层上的上电极。 上电极包括依次堆叠的第一导电层,第二导电层和第三导电层。 第一导电层包括金属层,导电金属氧化物层,导电金属氮化物层或导电金属氮氧化物层。 第二导电层包括掺杂多晶硅锗层。 第三导电层包括具有比第二导电层的电阻低的电阻的材料。