CHEMICAL MECHANICAL POLISHING COMPOSITION AND POLISHING METHOD

    公开(公告)号:US20240254365A1

    公开(公告)日:2024-08-01

    申请号:US18577266

    申请日:2022-08-01

    CPC classification number: C09G1/02 H01L21/3212 H01L21/7684

    Abstract: The present invention provides a chemical mechanical polishing composition with which it is possible to suppress ruthenium corrosion and also perform chemical mechanical polishing of a semiconductor substrate containing ruthenium while maintaining a stable polishing speed. The composition for chemical mechanical polishing of the present invention contains: (A) abrasive grains; (B) an acid containing at least one anion selected from the group consisting of periodate ions (IO4−), hypochlorite ions (CIO−), chlorite ions (CIO2−) and hypobromite ions (BrO−) or a salt of said acid; and (C) hydrogen peroxide. MB/MC=0.015 to 11, where MB (mol/L) is the amount of the (B) acid or salt thereof and MC (mol/L) is the amount of hydrogen peroxide (C).

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