Method of forming sidewall spacer using dual-frequency plasma enhanced CVD
    5.
    发明授权
    Method of forming sidewall spacer using dual-frequency plasma enhanced CVD 失效
    使用双频等离子体增强CVD形成侧壁间隔物的方法

    公开(公告)号:US07202187B2

    公开(公告)日:2007-04-10

    申请号:US10710257

    申请日:2004-06-29

    IPC分类号: H01L21/469 H01L21/31

    摘要: A silicon nitride spacer material for use in forming a PFET device and a method for making the spacer includes the use of a dual-frequency plasma enhanced CVD process wherein the temperature is in the range depositing a silicon nitride layer by means of a low-temperature dual-frequency plasma enhanced CVD process, at a temperature in the range 400° C. to 550° C. The process pressure is in the range 2 Torr to 5 Torr. The low frequency power is in the range 0 W to 50 W, and the high frequency power is in the range 90 W to 110 W. The precursor gases of silane, ammonia and nitrogen flow at flow rates in the ratio 240:3200:4000 sccm. The use of the silicon nitride spacer of the invention to form a PFET device having a dual spacer results in a 10%–15% performance improvement compared to a similar PFET device having a silicon nitride spacer formed by a RTCVD process.

    摘要翻译: 用于形成PFET器件的氮化硅间隔物材料和用于制造间隔物的方法包括使用双频等离子体增强CVD工艺,其中温度在通过低温下沉积氮化硅层的范围 双频等离子体增强CVD工艺,温度范围为400°C至550°C。工艺压力范围为2 Torr至5 Torr。 低频功率在0W至50W的范围内,高频功率在90W至110W的范围内。硅烷,氨和氮气的前体气体以240:3200:4000的比例流动 sccm。 与具有通过RTCVD工艺形成的氮化硅间隔物的类似PFET器件相比,使用本发明的氮化硅间隔物形成具有双间隔物的PFET器件导致10%-15%的性能提高。

    OPTIMIZED SiCN CAPPING LAYER
    7.
    发明申请
    OPTIMIZED SiCN CAPPING LAYER 审中-公开
    优化SiCN覆盖层

    公开(公告)号:US20090176367A1

    公开(公告)日:2009-07-09

    申请号:US11970748

    申请日:2008-01-08

    IPC分类号: H01L21/768

    摘要: A back-end-of-line (BEOL) interconnect structure and a method of forming an interconnect structure. The interconnect structure comprises a conductor, such as copper, embedded in a dielectric layer, and a low-k dielectric capping layer, which acts as a diffusion barrier, on the conductor. A method of forming the BEOL interconnect structure is disclosed, where the capping layer is deposited using plasma-enhanced chemical vapor deposition (PECVD) and is comprised of Si, C, H, and N. The interconnect structure provides improved oxygen diffusion resistance and improved barrier qualities allowing for a reduction in film thickness.

    摘要翻译: 后端行(BEOL)互连结构和形成互连结构的方法。 互连结构包括在导体上作为扩散阻挡层的埋入电介质层的导体(例如铜)和用作扩散阻挡层的低k电介质封盖层。 公开了形成BEOL互连结构的方法,其中使用等离子体增强化学气相沉积(PECVD)沉积覆盖层并且由Si,C,H和N组成。互连结构提供改善的耐氧扩散性和改进的 屏障质量允许减少膜厚度。