Method for Treating a Semiconductor Wafer
    5.
    发明申请
    Method for Treating a Semiconductor Wafer 有权
    用于处理半导体晶片的方法

    公开(公告)号:US20150371858A1

    公开(公告)日:2015-12-24

    申请号:US14313366

    申请日:2014-06-24

    IPC分类号: H01L21/265 H01L21/324

    摘要: A Magnetic Czochralski semiconductor wafer having opposing first and second sides arranged distant from one another in a first vertical direction is treated by implanting first particles into the semiconductor wafer via the second side to form crystal defects in the semiconductor wafer. The crystal defects have a maximum defect concentration at a first depth. The semiconductor wafer is heated in a first thermal process to form radiation induced donors. Implantation energy and dose are chosen such that the semiconductor wafer has, after the first thermal process, an n-doped semiconductor region arranged between the second side and first depth, and the n-doped semiconductor region has, in the first vertical direction, a local maximum of a net doping concentration between the first depth and second side and a local minimum of the net doping concentration between the first depth and first maximum.

    摘要翻译: 通过经由第二侧将第一粒子注入到半导体晶片中,在半导体晶片中形成晶体缺陷来处理具有沿第一垂直方向彼此远离布置的相对的第一和第二侧的磁性切克斯第斯基半导体晶片。 晶体缺陷在第一深度具有最大缺陷浓度。 在第一热处理中加热半导体晶片以形成辐射诱导的供体。 选择植入能量和剂量使得半导体晶片在第一热处理之后具有布置在第二侧和第一深度之间的n掺杂半导体区域,并且n掺杂半导体区域在第一垂直方向上具有 第一深度和第二侧之间的净掺杂浓度的局部最大值以及第一深度和第一最大值之间的净掺杂浓度的局部最小值。