ATOMIC LAYER ETCHING PROCESSES
    34.
    发明申请

    公开(公告)号:US20190122902A1

    公开(公告)日:2019-04-25

    申请号:US15792252

    申请日:2017-10-24

    Abstract: Processing methods may be performed to remove unwanted materials from a substrate. The methods may include forming a remote plasma of an inert precursor in a remote plasma region of a processing chamber. The methods may include forming a bias plasma of the inert precursor within a processing region of the processing chamber. The methods may include modifying a surface of an exposed material on a semiconductor substrate within the processing region of the processing chamber with plasma effluents of the inert precursor. The methods may include extinguishing the bias plasma while maintaining the remote plasma. The methods may include adding an etchant precursor to the remote plasma region to produce etchant plasma effluents. The methods may include flowing the etchant plasma effluents to the processing region of the processing chamber. The methods may also include removing the modified surface of the exposed material from the semiconductor substrate.

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