Method to remove copper contamination by using downstream oxygen and chelating agent plasma
    2.
    发明授权
    Method to remove copper contamination by using downstream oxygen and chelating agent plasma 失效
    使用下游氧和螯合剂等离子体去除铜污染的方法

    公开(公告)号:US06350689B1

    公开(公告)日:2002-02-26

    申请号:US09839962

    申请日:2001-04-23

    IPC分类号: H01L2144

    摘要: A method of removing copper contamination from a semiconductor wafer, comprising the following steps. A semiconductor wafer having copper contamination thereon is provided. An oxidizing radical containing downstream plasma is provided from a first source (alternatively halogen (F2, Cl2, or Br2) may be used as on oxidizing agent). A vaporized chelating agent is provided from a second source. The oxidizing radical containing downstream plasma and vaporized chelating agent are mixed to form an oxidizing radical containing downstream plasma/vaporized chelating agent mixture. The mixture is directed to the copper contamination so that the mixture reacts with the copper contamination to form a volatile product. The volatile product is removed from the proximity of the wafer.

    摘要翻译: 一种从半导体晶片去除铜污染的方法,包括以下步骤。 提供其上具有铜污染的半导体晶片。 从第一来源提供含有下游等离子体的氧化基团(或者可以在氧化剂上使用卤素(F2,Cl2或Br2))。 从第二来源提供蒸发的螯合剂。 将含有下游等离子体和气化螯合剂的氧化基团混合以形成含有下游等离子体/汽化螯合剂混合物的氧化基团。 混合物被引导到铜污染物,使得混合物与铜污染物反应形成挥发性产物。 从晶片附近去除挥发性产物。