Diffusion barrier and etch stop films
    1.
    发明授权
    Diffusion barrier and etch stop films 有权
    扩散阻挡层和蚀刻停止膜

    公开(公告)号:US07915166B1

    公开(公告)日:2011-03-29

    申请号:US11710652

    申请日:2007-02-22

    IPC分类号: H01L21/302 H01L21/461

    摘要: Films having high hermeticity and a low dielectric constant can be used as copper diffusion barrier films, etch stop films, CMP stop films and other hardmasks during IC fabrication. Hermetic films can protect the underlying layers, such as layers of metal and dielectric, from exposure to atmospheric moisture and oxygen, thereby preventing undesirable oxidation of metal surfaces and absorption of moisture by a dielectric. Specifically, a bi-layer film having a hermetic bottom layer composed of hydrogen doped carbon and a low dielectric constant (low-k) top layer composed of low-k silicon carbide (e.g., high carbon content hydrogen doped silicon carbide) can be employed. Such bi-layer film can be deposited by PECVD methods on a partially fabricated semiconductor substrate having exposed layers of dielectric and metal.

    摘要翻译: 在IC制造过程中,可以使用具有高气密性和低介电常数的膜作为铜扩散阻挡膜,蚀刻停止膜,CMP阻挡膜和其它硬掩模。 密封膜可以保护下面的层,例如金属和电介质层,暴露于大气中的水分和氧气,从而防止金属表面的不期望的氧化和电介质吸收水分。 具体而言,可以使用具有由氢掺杂碳组成的气密底层和由低k碳化硅构成的低介电常数(低k)顶层的双层膜(例如,高碳含量氢掺杂碳化硅) 。 这种双层膜可以通过PECVD方法沉积在具有暴露的介电层和金属层的部分制造的半导体衬底上。

    Diffusion barrier and etch stop films
    2.
    发明授权
    Diffusion barrier and etch stop films 有权
    扩散屏障和蚀刻停止膜

    公开(公告)号:US08669181B1

    公开(公告)日:2014-03-11

    申请号:US13032392

    申请日:2011-02-22

    IPC分类号: H01L21/44

    摘要: Films having high hermeticity and a low dielectric constant can be used as copper diffusion barrier films, etch stop films, CMP stop films and other hardmasks during IC fabrication. Hermetic films can protect the underlying layers, such as layers of metal and dielectric, from exposure to atmospheric moisture and oxygen, thereby preventing undesirable oxidation of metal surfaces and absorption of moisture by a dielectric. Specifically, a bi-layer film having a hermetic bottom layer composed of hydrogen doped carbon and a low dielectric constant (low-k) top layer composed of low-k silicon carbide (e.g., high carbon content hydrogen doped silicon carbide) can be employed. Such bi-layer film can be deposited by PECVD methods on a partially fabricated semiconductor substrate having exposed layers of dielectric and metal.

    摘要翻译: 在IC制造过程中,可以使用具有高气密性和低介电常数的膜作为铜扩散阻挡膜,蚀刻停止膜,CMP阻挡膜和其它硬掩模。 密封膜可以保护下面的层,例如金属和电介质层,暴露于大气中的水分和氧气,从而防止金属表面的不期望的氧化和电介质吸收水分。 具体而言,可以使用具有由氢掺杂碳组成的气密底层和由低k碳化硅构成的低介电常数(低k)顶层的双层膜(例如,高碳含量氢掺杂碳化硅) 。 这种双层膜可以通过PECVD方法沉积在具有暴露的介电层和金属层的部分制造的半导体衬底上。