Use of organic reductants to lower brightener consumption in acid copper electroplating bath utilising catalytic anodes

A. J. Cobley, D. R. Gabe

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Catalytic anodes are an enabling technology for high speed, horizontal acid copper electroplating. However, their usage is associated with high additive oxidation rates which can be problematic in terms of cost and control of the electrolyte. The addition of certain 'organic reductants' to the electroplating solution has been found to have a dramatic effect on brightener consumption when catalytic anodes are employed. This paper reports an investigation of three such compounds having varying functionality with respect to brightener oxidation. It was found that the ability of a particular organic reductant to influence brightener oxidation was related to its electrochemical properties on a particular anode material. However, it is postulated that the species' mechanism of oxidation and its anti-oxidant properties may also be important factors.

    Original languageEnglish
    Pages (from-to)149-153
    Number of pages5
    JournalTransactions of the Institute of Metal Finishing
    Volume84
    Issue number3
    DOIs
    Publication statusPublished - May 2006

    Fingerprint

    Reducing Agents
    electroplating
    Electroplating
    Copper
    baths
    Anodes
    anodes
    copper
    Oxidation
    oxidation
    acids
    Acids
    Electroplating solutions
    Electrochemical properties
    Oxidants
    Electrolytes
    high speed
    electrolytes
    costs
    Costs

    Keywords

    • Anode
    • Ascorbic acid
    • Brightener
    • Copper electroplating

    ASJC Scopus subject areas

    • Metals and Alloys
    • Surfaces, Coatings and Films
    • Surfaces and Interfaces

    Cite this

    @article{507bf5566080449598d18f21ccd6fffb,
    title = "Use of organic reductants to lower brightener consumption in acid copper electroplating bath utilising catalytic anodes",
    abstract = "Catalytic anodes are an enabling technology for high speed, horizontal acid copper electroplating. However, their usage is associated with high additive oxidation rates which can be problematic in terms of cost and control of the electrolyte. The addition of certain 'organic reductants' to the electroplating solution has been found to have a dramatic effect on brightener consumption when catalytic anodes are employed. This paper reports an investigation of three such compounds having varying functionality with respect to brightener oxidation. It was found that the ability of a particular organic reductant to influence brightener oxidation was related to its electrochemical properties on a particular anode material. However, it is postulated that the species' mechanism of oxidation and its anti-oxidant properties may also be important factors.",
    keywords = "Anode, Ascorbic acid, Brightener, Copper electroplating",
    author = "Cobley, {A. J.} and Gabe, {D. R.}",
    year = "2006",
    month = "5",
    doi = "10.1179/174591906X123985",
    language = "English",
    volume = "84",
    pages = "149--153",
    journal = "Transactions of the IMF",
    issn = "0020-2967",
    publisher = "Taylor & Francis",
    number = "3",

    }

    TY - JOUR

    T1 - Use of organic reductants to lower brightener consumption in acid copper electroplating bath utilising catalytic anodes

    AU - Cobley, A. J.

    AU - Gabe, D. R.

    PY - 2006/5

    Y1 - 2006/5

    N2 - Catalytic anodes are an enabling technology for high speed, horizontal acid copper electroplating. However, their usage is associated with high additive oxidation rates which can be problematic in terms of cost and control of the electrolyte. The addition of certain 'organic reductants' to the electroplating solution has been found to have a dramatic effect on brightener consumption when catalytic anodes are employed. This paper reports an investigation of three such compounds having varying functionality with respect to brightener oxidation. It was found that the ability of a particular organic reductant to influence brightener oxidation was related to its electrochemical properties on a particular anode material. However, it is postulated that the species' mechanism of oxidation and its anti-oxidant properties may also be important factors.

    AB - Catalytic anodes are an enabling technology for high speed, horizontal acid copper electroplating. However, their usage is associated with high additive oxidation rates which can be problematic in terms of cost and control of the electrolyte. The addition of certain 'organic reductants' to the electroplating solution has been found to have a dramatic effect on brightener consumption when catalytic anodes are employed. This paper reports an investigation of three such compounds having varying functionality with respect to brightener oxidation. It was found that the ability of a particular organic reductant to influence brightener oxidation was related to its electrochemical properties on a particular anode material. However, it is postulated that the species' mechanism of oxidation and its anti-oxidant properties may also be important factors.

    KW - Anode

    KW - Ascorbic acid

    KW - Brightener

    KW - Copper electroplating

    UR - http://www.scopus.com/inward/record.url?scp=33748681803&partnerID=8YFLogxK

    U2 - 10.1179/174591906X123985

    DO - 10.1179/174591906X123985

    M3 - Article

    VL - 84

    SP - 149

    EP - 153

    JO - Transactions of the IMF

    JF - Transactions of the IMF

    SN - 0020-2967

    IS - 3

    ER -