ATOMIC LAYER DEPOSITION OF TUNGSTEN MATERIALS
    9.
    发明申请
    ATOMIC LAYER DEPOSITION OF TUNGSTEN MATERIALS 有权
    原子层沉积材料

    公开(公告)号:US20120244699A1

    公开(公告)日:2012-09-27

    申请号:US13491191

    申请日:2012-06-07

    IPC分类号: H01L21/285

    摘要: Embodiments of the invention provide a method for depositing tungsten-containing materials. In one embodiment, a method includes forming a tungsten nucleation layer over an underlayer disposed on the substrate while sequentially providing a tungsten precursor and a reducing gas into a process chamber during an atomic layer deposition (ALD) process and depositing a tungsten bulk layer over the tungsten nucleation layer, wherein the reducing gas contains hydrogen gas and a hydride compound (e.g., diborane) and has a hydrogen/hydride flow rate ratio of about 500:1 or greater. In some examples, the method includes flowing the hydrogen gas into the process chamber at a flow rate within a range from about 1 slm to about 20 slm and flowing a mixture of the hydride compound and a carrier gas into the process chamber at a flow rate within a range from about 50 sccm to about 500 sccm.

    摘要翻译: 本发明的实施方案提供了一种沉积含钨材料的方法。 在一个实施例中,一种方法包括在设置在衬底上的底层上形成钨成核层,同时在原子层沉积(ALD)工艺期间依次提供钨前体和还原气体到处理室中,并在其上沉积钨体积层 钨成核层,其中所述还原气体包含氢气和氢化物化合物(例如乙硼烷),并且具有约500:1或更高的氢/氢化物流速比。 在一些实例中,该方法包括以约1slm至约20slm的流速将氢气流入处理室,并将氢化物化合物和载气的混合物以流速流动到处理室中 在约50sccm至约500sccm的范围内。

    Atomic layer deposition of tungsten materials
    10.
    发明授权
    Atomic layer deposition of tungsten materials 有权
    原子层沉积钨材料

    公开(公告)号:US07964505B2

    公开(公告)日:2011-06-21

    申请号:US12121209

    申请日:2008-05-15

    IPC分类号: H01L21/44

    摘要: Embodiments of the invention provide an improved process for depositing tungsten-containing materials. The process utilizes soak processes and vapor deposition processes, such as atomic layer deposition (ALD) to provide tungsten films having significantly improved surface uniformity and production level throughput. In one embodiment, a method for forming a tungsten-containing material on a substrate is provided which includes positioning a substrate within a process chamber, wherein the substrate contains an underlayer disposed thereon, exposing the substrate sequentially to a tungsten precursor and a reducing gas to deposit a tungsten nucleation layer on the underlayer during an ALD process, wherein the reducing gas contains a hydrogen/hydride flow rate ratio of about 40:1, 100:1, 500:1, 800:1, 1,000:1, or greater, and depositing a tungsten bulk layer on the tungsten nucleation layer. The reducing gas contains a hydride compound, such as diborane, silane, or disilane.

    摘要翻译: 本发明的实施方案提供了一种用于沉积含钨材料的改进方法。 该方法利用诸如原子层沉积(ALD)的浸泡工艺和气相沉积工艺来提供具有显着改善的表面均匀性和生产水平生产量的钨膜。 在一个实施例中,提供了一种用于在衬底上形成含钨材料的方法,其包括将衬底定位在处理室内,其中衬底包含设置在其上的底层,将衬底依次暴露于钨前体和还原气体 在ALD工艺期间,在底层上沉积钨成核层,其中还原气体含有约40:1,100:1,500:1,800:1,1,000:1或更高的氢氢化物流速比, 以及在钨成核层上沉积钨体层。 还原气体含有氢化物化合物,例如乙硼烷,硅烷或乙硅烷。