SiCOH hardmask with graded transition layers
    10.
    发明授权
    SiCOH hardmask with graded transition layers 有权
    具有渐变过渡层的SiCOH硬掩模

    公开(公告)号:US08927442B1

    公开(公告)日:2015-01-06

    申请号:US13951321

    申请日:2013-07-25

    Abstract: A structure and method for fabricating an improved SiCOH hardmask with graded transition layers having an improved profile for forming sub-20 nm back end of the line (BEOL) metallized interconnects are provided. In one embodiment, the improved hardmask may be comprised of five layers: an oxide adhesion layer, a graded transition layer, a dielectric layer, an inverse graded transition layer, and an oxide layer. In another embodiment, the improved hardmask may be comprised of four layers; an oxide adhesion layer, a graded transition layer, a dielectric layer, and an oxide layer. In another embodiment, a method of forming an improved hardmask may comprise a continuous five step plasma enhanced chemical vapor deposition (PECVD) process utilizing a silicon precursor, a porogen, and oxygen. In yet another embodiment, a method of forming an improved hardmask may comprise a continuous four step PECVD process utilizing a silicon precursor, a porogen, and oxygen.

    Abstract translation: 提供了一种用于制造具有渐变过渡层的改进的SiCOH硬掩模的结构和方法,其具有用于形成线路(BEOL)金属化互连的次20nm后端的改进的轮廓。 在一个实施例中,改进的硬掩模可以由五层组成:氧化物粘附层,渐变过渡层,电介质层,反向渐变过渡层和氧化物层。 在另一个实施例中,改进的硬掩模可以由四层构成; 氧化物粘附层,渐变过渡层,电介质层和氧化物层。 在另一个实施例中,形成改进的硬掩模的方法可以包括利用硅前体,致孔剂和氧气的连续五级等离子体增强化学气相沉积(PECVD)工艺。 在另一个实施例中,形成改进的硬掩模的方法可以包括利用硅前体,致孔剂和氧的连续四步PECVD工艺。

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