Semi-insulating diffusion barrier for low-resistivity gate conductors
    1.
    发明授权
    Semi-insulating diffusion barrier for low-resistivity gate conductors 失效
    用于低电阻率栅极导体的半绝缘扩散阻挡层

    公开(公告)号:US06444516B1

    公开(公告)日:2002-09-03

    申请号:US09613197

    申请日:2000-07-07

    CPC classification number: H01L21/28044 H01L29/4941

    Abstract: A gate structure for a semiconductor device, and particularly a MOSFET for such applications as CMOS technology. The gate structure entails an electrical insulating layer on a semiconductor substrate, over which a polysilicon gate electrode is formed. The gate structure further includes a gate conductor that is electrically connected with the gate electrode through a diffusion barrier layer having semi-insulating properties. The composition and thickness of the diffusion barrier layer are tailored so that the barrier layer is effective to block diffusion and intermixing between the gate conductor and polysilicon gate electrode, yet provides sufficient capacitive coupling and/or current leakage so as not to significantly increase the gate propagation delay of the gate structure.

    Abstract translation: 用于半导体器件的栅极结构,特别是用于诸如CMOS技术的应用的MOSFET。 栅结构需要在半导体衬底上形成电绝缘层,形成多晶硅栅电极。 栅极结构还包括通过具有半绝缘性质的扩散阻挡层与栅电极电连接的栅极导体。 调整扩散阻挡层的组成和厚度,使得阻挡层有效地阻挡栅极导体和多晶硅栅电极之间的扩散和混合,但提供足够的电容耦合和/或电流泄漏,从而不显着增加栅极 门结构的传播延迟。

Patent Agency Ranking