SEMICONDUCTOR WAFER RE-USE IN AN EXFOLIATION PROCESS USING HEAT TREATMENT
    3.
    发明公开
    SEMICONDUCTOR WAFER RE-USE IN AN EXFOLIATION PROCESS USING HEAT TREATMENT 审中-公开
    半导体晶片重新使用在热治疗中ABBLÄTTERUNGSPROZESS

    公开(公告)号:EP2186126A1

    公开(公告)日:2010-05-19

    申请号:EP08795616.5

    申请日:2008-08-27

    IPC分类号: H01L21/762

    CPC分类号: H01L21/76254

    摘要: Methods and apparatus for re-using a semiconductor donor wafer in a semiconductor-on-insulator (SOI) fabrication process provide for: (a) subjecting a first implantation surface of a donor semiconductor wafer to an ion implantation process to create a first exfoliation layer of the donor semiconductor wafer; (b) bonding the first implantation surface of the first exfoliation layer to a first insulator substrate; (c) separating the first exfoliation layer from the donor semiconductor wafer, thereby exposing a first cleaved surface of the donor semiconductor wafer, the first cleaved surface having a first damage thickness; and (d) subjecting the first cleaved surface of the donor semiconductor wafer to one or more elevated temperatures over time to reduce the first damage thickness to a sufficient level to produce a second implantation surface.