Method of depositing a thick titanium nitride film
    14.
    发明授权
    Method of depositing a thick titanium nitride film 有权
    沉积厚氮化钛膜的方法

    公开(公告)号:US06548402B2

    公开(公告)日:2003-04-15

    申请号:US09330696

    申请日:1999-06-11

    IPC分类号: C23C1634

    摘要: A method of forming a titanium nitride (TiN) layer using a reaction between ammonia (NH3) and titanium tetrachloride (TiCl4). In one embodiment, an NH3:TiCl4 ratio of about 8.5 is used to deposit a TiN layer at a temperature of about 500° C. at a pressure of about 20 torr. In another embodiment, a composite TiN layer is formed by alternately depositing TiN layers of different thicknesses, using process conditions having different NH3:TiCl4 ratios. In one preferred embodiment, a TiN layer of less than about 20 Å is formed at an NH3:TiCl4 ratio of about 85, followed by a deposition of a thicker TiN layer at an NH3:TiCl4 ratio of about 8.5. By repeating the alternate film deposition using the two different process conditions, a composite TiN layer is formed. This composite TiN layer has an improved overall step coverage and reduced stress, compared to a standard TiN process, and is suitable for small geometry plug fill applications.

    摘要翻译: 使用氨(NH 3)与四氯化钛(TiCl 4)之间的反应形成氮化钛(TiN)层的方法。 在一个实施方案中,使用约8.5的NH 3 :TiCl 4比率在约20托的压力下在约500℃的温度下沉积TiN层。 在另一个实施例中,通过使用具有不同NH 3 :TiCl 4比率的工艺条件交替沉积不同厚度的TiN层来形成复合TiN层。 在一个优选的实施方案中,以大约85的NH 3 :TiCl 4比例形成小于约的TiN层,然后以约8.5的NH 3 :TiCl 4比率沉积较厚的TiN层。 通过使用两种不同的工艺条件重复替代膜沉积,形成复合TiN层。 与标准TiN工艺相比,该复合TiN层具有改进的整体台阶覆盖和减小的应力,适用于小型几何填塞应用。

    ATOMIC LAYER DEPOSITION PROCESSES FOR RUTHENIUM MATERIALS
    16.
    发明申请
    ATOMIC LAYER DEPOSITION PROCESSES FOR RUTHENIUM MATERIALS 审中-公开
    原子材料的原子层沉积工艺

    公开(公告)号:US20070077750A1

    公开(公告)日:2007-04-05

    申请号:US11470473

    申请日:2006-09-06

    IPC分类号: H01L21/4763 H01L21/00

    摘要: Embodiments of the invention provide a method for depositing ruthenium materials on a substrate by various vapor deposition processes, such as atomic layer deposition (ALD) and plasma-enhanced ALD (PE-ALD). In one aspect, the process has little or no initiation delay and maintains a fast deposition rate while forming a ruthenium material. The ruthenium material may be deposited with good step coverage, strong adhesion, and contains a low carbon concentration for high electrical conductivity. The method for depositing the ruthenium material on a substrate generally includes sequentially exposing the substrate to a pyrrolyl ruthenium precursor and a reagent during the ALD process. The pyrrolyl ruthenium precursor contains ruthenium and at least one pyrrolyl ligand. In some examples, the reagent may contain a plasma of ammonia, nitrogen, or hydrogen during a PE-ALD process. In other examples, a reducing gas may be used during a thermal ALD process.

    摘要翻译: 本发明的实施方案提供了一种通过诸如原子层沉积(ALD)和等离子体增强型ALD(PE-ALD)之类的各种气相沉积工艺在基片上沉积钌材料的方法。 在一个方面,该方法很少或没有引发延迟并且在形成钌材料时保持快速的沉积速率。 钌材料可以以良好的阶梯覆盖,强粘附性沉积,并且包含低碳浓度用于高电导率。 用于在基底上沉积钌材料的方法通常包括在ALD工艺期间将衬底顺序地暴露于吡咯基钌前体和试剂。 吡咯钌前体含有钌和至少一个吡咯基配体。 在一些实例中,在PE-ALD工艺期间,试剂可以含有氨,氮或氢的等离子体。 在其他实例中,在热ALD工艺期间可以使用还原气体。

    Method of performing titanium/titanium nitride integration
    17.
    发明授权
    Method of performing titanium/titanium nitride integration 失效
    执行钛/氮化钛整合的方法

    公开(公告)号:US06221174B1

    公开(公告)日:2001-04-24

    申请号:US09248869

    申请日:1999-02-11

    IPC分类号: C23C824

    CPC分类号: C23C16/0281 H01L21/28568

    摘要: The present invention is a method of wafer processing which improves the reliability of an integrated titanium (Ti)/titanium nitride (TiN) CVD film formed from a reaction of titanium tetrachloride (TiCi4) and ammonia (NH3). A Ti film is subject to a treatment of NH3 gas to render the Ti film unreactive towards attack by chlorine and hydrogen chloride. A thin seed layer of TiN film is deposited upon the treated Ti film using a thermal TiCl4/NH3 reaction. Subsequent TiN film deposition upon the seed layer results in a successful integration of a Ti/TiN film stack for a Ti film thickness up to about 300 Å.

    摘要翻译: 本发明是提高由四氯化钛(TiCi4)和氨(NH3)的反应形成的钛(Ti)/氮化钛(TiN)CVD膜的一体化的可靠性的晶片处理方法。 对Ti膜进行NH 3气处理,使Ti膜不受氯和氯化氢侵蚀。 使用热TiCl 4 / NH 3反应将TiN膜的薄晶种层沉积在处理的Ti膜上。 随后在种子层上的TiN膜沉积导致Ti / TiN膜叠层的成功整合,使Ti膜厚度达到约300。