Cobalt filling of interconnects in microelectronics

    公开(公告)号:US10995417B2

    公开(公告)日:2021-05-04

    申请号:US15739314

    申请日:2016-06-30

    Abstract: Processes and compositions for electroplating a cobalt deposit onto a semiconductor base structure comprising submicron-sized electrical interconnect features. In the process, a metalizing substrate within the interconnect features is contacted with an electrodeposition composition comprising a source of cobalt ions, an accelerator comprising an organic sulfur compound, an acetylenic suppressor, a buffering agent and water. Electrical current is supplied to the electrolytic composition to deposit cobalt onto the base structure and fill the submicron-sized features with cobalt. The process is effective for superfilling the interconnect features.

    Cobalt Filling of Interconnects in Microelectronics

    公开(公告)号:US20210222314A1

    公开(公告)日:2021-07-22

    申请号:US17220540

    申请日:2021-04-01

    Abstract: Processes and compositions for electroplating a cobalt deposit onto a semiconductor base structure comprising sub-micron-sized electrical interconnect features. In the process, a metalizing substrate within the interconnect features is contacted with an electrodeposition composition comprising a source of cobalt ions, an accelerator comprising an organic sulfur compound, an acetylenic suppressor, a buffering agent and water. Electrical current is supplied to the electrolytic composition to deposit cobalt onto the base structure and fill the submicron-sized features with cobalt. The process is effective for superfilling the interconnect features.

    Copper Electrodeposition in Microelectronics

    公开(公告)号:US20190390356A1

    公开(公告)日:2019-12-26

    申请号:US16334168

    申请日:2017-09-21

    Abstract: An electrolytic plating composition for superfilling submicron features in a semiconductor integrated circuit device and a method of using the same. The composition comprises (a) a source of copper ions to electrolytically deposit copper onto the substrate and into the electrical interconnect features, and (b) a suppressor comprising at least three amine sites, said polyether comprising a block copolymer substituent comprising propylene oxide (PO) repeat units and ethylene oxide (EO) repeat units, wherein the number average molecular weight of the suppressor compound is between about 1,000 and about 20,000.

    Cobalt filling of interconnects in microelectronics

    公开(公告)号:US11434578B2

    公开(公告)日:2022-09-06

    申请号:US17220540

    申请日:2021-04-01

    Abstract: Processes and compositions for electroplating a cobalt deposit onto a semiconductor base structure comprising sub-micron-sized electrical interconnect features. In the process, a metalizing substrate within the interconnect features is contacted with an electrodeposition composition comprising a source of cobalt ions, an accelerator comprising an organic sulfur compound, an acetylenic suppressor, a buffering agent and water. Electrical current is supplied to the electrolytic composition to deposit cobalt onto the base structure and fill the submicron-sized features with cobalt. The process is effective for superfilling the interconnect features.

    Cobalt Filling of Interconnects in Microelectronics

    公开(公告)号:US20200040478A1

    公开(公告)日:2020-02-06

    申请号:US15739314

    申请日:2016-06-30

    Abstract: Processes and compositions for electroplating a cobalt deposit onto a semiconductor base structure comprising submicron-sized electrical interconnect features. In the process, a metalizing substrate within the interconnect features is contacted with an electrodeposition composition comprising a source of cobalt ions, an accelerator comprising an organic sulfur compound, an acetylenic suppressor, a buffering agent and water. Electrical current is supplied to the electrolytic composition to deposit cobalt onto the base structure and fill the submicron-sized features with cobalt. The process is effective for superfilling the interconnect features.

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