SELECTIVE COBALT DEPOSITION ON COPPER SURFACES

    公开(公告)号:US20210062330A1

    公开(公告)日:2021-03-04

    申请号:US17002296

    申请日:2020-08-25

    Abstract: A method for capping a copper surface on a substrate. In embodiments, the methods include exposing a substrate including a copper surface and a dielectric surface to a cobalt precursor gas and a process gas including a reducing agent to selectively form a first cobalt capping layer over the copper surface while leaving exposed the dielectric surface during a vapor deposition process, wherein a flow rate ratio of process gas to cobalt precursor gas is at least 300:1.

    METHODS AND APPARATUS FOR FORMING STABILIZATION LAYERS

    公开(公告)号:US20220037204A1

    公开(公告)日:2022-02-03

    申请号:US16983402

    申请日:2020-08-03

    Abstract: Methods and apparatus that forms a stabilization layer on copper-based material to inhibit formation of copper voids in the copper-based material. In some embodiments, a method of forming the stabilization layer on the copper-based material includes depositing a first stabilization layer on the copper-based material where the first stabilization layer forms a continuous film on the copper-based material and is formed of a first material that does not alloy with copper, depositing a second stabilization layer on the first stabilization layer where the second stabilization layer is formed from a second material that alloys with copper and where the first stabilization layer is configured to inhibit formation of voids in the copper-based material during subsequent high thermal budget processing.

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