Method for simultaneous degas and baking in copper damascene process
    13.
    发明授权
    Method for simultaneous degas and baking in copper damascene process 有权
    铜镶嵌工艺同时脱气和烘烤的方法

    公开(公告)号:US07030023B2

    公开(公告)日:2006-04-18

    申请号:US10655972

    申请日:2003-09-04

    IPC分类号: H01L21/302

    摘要: A method for forming a copper damascene feature including providing a semiconductor process wafer including at least one via opening formed to extend through a thickness of at least one dielectric insulating layer and an overlying trench line opening encompassing the at least one via opening to form a dual damascene opening; etching through an etch stop layer at the at least one via opening bottom portion to expose an underlying copper area; carrying out a sub-atmospheric DEGAS process with simultaneous heating of the process wafer in a hydrogen containing ambient; carrying out an in-situ sputter-clean process; and, forming a barrier layer in-situ to line the dual damascene opening.

    摘要翻译: 一种用于形成铜镶嵌特征的方法,包括提供半导体工艺晶片,其包括形成为延伸穿过至少一个介电绝缘层的厚度的至少一个通孔开口,以及覆盖所述至少一个通孔开口的上覆沟槽开口,以形成双重 大马士革开幕 在所述至少一个通孔开口底部处蚀刻通过蚀刻停止层以暴露下面的铜区域; 在含氢环境中同时加热工艺晶片,进行亚低温DEGAS工艺; 进行原位溅射清洗过程; 并且原位形成阻挡层以使双镶嵌开口成线。