Aluminum oxide LPCVD system
    1.
    发明授权
    Aluminum oxide LPCVD system 失效
    氧化铝LPCVD系统

    公开(公告)号:US5540777A

    公开(公告)日:1996-07-30

    申请号:US541284

    申请日:1995-10-12

    摘要: A process and apparatus for Al.sub.2 O.sub.3 CVD on silicon wafers using aluminum tri-isopropoxide in a high-volume production environment is presented. The conditions required to use ATI in a production environment and provide maximum utilization of ATI are first of all delivery of ATI via direct evaporation. The ATI source bottle is pumped out (bypassing substrates) until propene and isopropanol signals are reduced to 1% of process pressure before start of aluminum oxide deposition. Either IR spectroscopy or mass spectrometry can be used to provide a control signal to the microprocessor controller. Heating the supplied tetramer to 120.degree. C. for two hours assures complete conversion to trimer. The ATI is stored at 90.degree. C. to minimize decomposition during idle periods and allow recovery of trimer upon return to 120.degree. C. for two hours. During periods of demand, the ATI is held at 120.degree. C. to minimize decomposition.

    摘要翻译: 介绍了在大批量生产环境中使用三异丙氧基铝的硅晶片上Al2O3 CVD的工艺和装置。 在生产环境中使用ATI并提供ATI的最大利用率所需的条件首先通过直接蒸发传送ATI。 在开始氧化铝沉积之前,将ATI源瓶泵出(旁路基板),直到丙烯和异丙醇信号降低到过程压力的1%。 可以使用红外光谱或质谱法向微处理器控制器提供控制信号。 将供应的四聚体加热至120℃保持两小时,确保完全转化为三聚体。 将ATI储存在90℃以使空闲期间的分解最小化,并允许在回到120℃回收三聚体两小时。 在需求期间,ATI保持在120℃以最小化分解。

    Metal seed layer deposition
    9.
    发明授权
    Metal seed layer deposition 失效
    金属种子层沉积

    公开(公告)号:US07235487B2

    公开(公告)日:2007-06-26

    申请号:US10709562

    申请日:2004-05-13

    IPC分类号: H01L21/44

    摘要: A method and structure for reducing the corrosion of the copper seed layer during the fabrication process of a semiconductor structure. Before the structure (or the wafer containing the structure) exits the vacuum environment of the sputter tool, the structure is warmed up to a temperature above the water condensation temperature of the environment outside the sputter tool. As a result, water vapor would not condense on the structure when the structure exits the sputter tool, and therefore, corrosion of the seed layer by the water vapor is prevented. Alternatively, a protective layer resistant to water vapor can be formed on top of the seed layer before the structure exits the sputter tool environment. In yet another alternative embodiment, the seed layer can comprises a copper alloy (such as with aluminum) which grows a protective layer resistant to water vapor upon exposure to water vapor.

    摘要翻译: 一种用于在半导体结构的制造过程中减少铜籽晶层的腐蚀的方法和结构。 在结构(或包含结构的晶片)离开溅射工具的真空环境之前,将结构加热到高于溅射工具外部环境的水冷凝温度的温度。 结果,当结构离开溅射工具时,水蒸气不会在结构上冷凝,因此防止了水蒸气对种子层的腐蚀。 或者,在结构离开溅射工具环境之前,可以在籽晶层的顶部形成耐水蒸汽的保护层。 在另一替代实施例中,种子层可以包括铜合金(例如用铝),其在暴露于水蒸汽时生长出耐水蒸气的保护层。