RUTHENIUM ETCHING PROCESS
    3.
    发明申请

    公开(公告)号:US20220301887A1

    公开(公告)日:2022-09-22

    申请号:US17202675

    申请日:2021-03-16

    Abstract: Embodiments of this disclosure provide methods for etching ruthenium. A halide-containing-gas is flowed into a substrate processing chamber, and then an oxygen-containing gas is flowed into the substrate processing chamber. The methods may include atomic layer etching (ALE). The methods may be conducted at higher processing chambers, permitting deposition and etching of ruthenium to be conducted in the same processing chamber.

    Methods of etching films comprising transition metals

    公开(公告)号:US10297462B2

    公开(公告)日:2019-05-21

    申请号:US15789282

    申请日:2017-10-20

    Abstract: Provided are methods for etching films comprising transition metals. Certain methods involve activating a substrate surface comprising at least one transition metal, wherein activation of the substrate surface comprises exposing the substrate surface to heat, a plasma, an oxidizing environment, or a halide transfer agent to provide an activated substrate surface; and exposing the activated substrate surface to a reagent comprising a Lewis base or pi acid to provide a vapor phase coordination complex comprising one or more atoms of the transition metal coordinated to one or more ligands from the reagent. Certain other methods provide selective etching from a multi-layer substrate comprising two or more of a layer of Co, a layer of Cu and a layer of Ni.

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