DIFFUSION LAYERS IN METAL INTERCONNECTS

    公开(公告)号:US20230077737A1

    公开(公告)日:2023-03-16

    申请号:US17474394

    申请日:2021-09-14

    Abstract: Exemplary methods of plating are described. The methods may include contacting a patterned substrate with a plating bath in a plating chamber. The patterned substrate includes at least one metal interconnect with a contact surface that is exposed to the plating bath. The metal interconnect is made of a first metal characterized by a first reduction potential. The methods further include plating a diffusion layer on the contact surface of the metal interconnect. The diffusion layer is made of a second metal characterized by a second reduction potential that is larger than the first reduction potential of the first metal in the metal interconnects. The plating bath also includes one or more ions of the second metal and a grain refining compound that reduces the formation of pinhole defects in the diffusion layer.

    Systems and methods for copper (I) suppression in electrochemical deposition

    公开(公告)号:US11211252B2

    公开(公告)日:2021-12-28

    申请号:US16260611

    申请日:2019-01-29

    Abstract: Electroplating systems according to the present technology may include a two-bath electroplating chamber including a separator configured to provide fluid separation between a first bath configured to maintain a catholyte during operation and a second bath configured to maintain an anolyte during operation. The electroplating systems may include a catholyte tank and an anolyte tank fluidly coupled with the two baths of the two-bath electroplating chamber. The electroplating systems may include a first pump configured to provide catholyte from the catholyte tank to the first bath. The electroplating systems may include a second pump configured to provide anolyte from the anolyte tank to the second bath. The electroplating systems may also include an oxygen-delivery apparatus configured to provide an oxygen-containing fluid within the electroplating system.

    Drying high aspect ratio features

    公开(公告)号:US10546762B2

    公开(公告)日:2020-01-28

    申请号:US15814252

    申请日:2017-11-15

    Abstract: Methods of drying a semiconductor substrate may include applying a drying agent to a semiconductor substrate, where the drying agent wets the semiconductor substrate. The methods may include heating a chamber housing the semiconductor substrate to a temperature above an atmospheric pressure boiling point of the drying agent until a vapor-liquid equilibrium of the drying agent within the chamber has been reached. The methods may further include venting the chamber, where the venting vaporizes the liquid phase of the drying agent from the semiconductor substrate.

    SYSTEMS AND METHODS FOR COPPER (I) SUPPRESSION IN ELECTROCHEMICAL DEPOSITION

    公开(公告)号:US20190237335A1

    公开(公告)日:2019-08-01

    申请号:US16260611

    申请日:2019-01-29

    CPC classification number: H01L21/2885 C25D3/38 C25D5/10 C25D7/123 H01L21/76843

    Abstract: Electroplating systems according to the present technology may include a two-bath electroplating chamber including a separator configured to provide fluid separation between a first bath configured to maintain a catholyte during operation and a second bath configured to maintain an anolyte during operation. The electroplating systems may include a catholyte tank and an anolyte tank fluidly coupled with the two baths of the two-bath electroplating chamber. The electroplating systems may include a first pump configured to provide catholyte from the catholyte tank to the first bath. The electroplating systems may include a second pump configured to provide anolyte from the anolyte tank to the second bath. The electroplating systems may also include an oxygen-delivery apparatus configured to provide an oxygen-containing fluid within the electroplating system.

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