Electrodeposition of ZnTe Film with High Current Efficiency at Low Overpotential from a Citric Acid Bath

Takahiro Ishizaki, Takeshi Ohtomo, Akio Fuwa

    研究成果: Article

    24 引用 (Scopus)

    抄録

    The cathodic electrodeposition of ZnTe film was studied using an aqueous citric acid bath (pH 4; temperature 368 K) in which Zn(II) and Te(IV) species were dissolved to form Zn(Cit)2 4- and HTeO 2 + ions, respectively. The deposition mechanism was studied based on cyclic voltammetry. The influence of the deposition potential on the morphology, composition, and structure of the deposited film was also investigated. A smooth, dense polycrystalline ZnTe film with nearly stoichiometric composition was deposited at a constant cathode potential, ranging from -0.80 to -0.60 V vs. Ag/AgCl, from a solution containing 20 mmol dm-3 Zn(II), 0.16 mmol dm-3 Te(IV), 0.25 mol dm -3 H3Cit, and 0.25 mol dm-3 Na3Cit (Cit = C6H5O7). Potentials in this range provided the deposited ZnTe film with high current efficiency (above 98%). During electrodeposition of the nearly stoichiometric crystalline ZnTe, the current density was approximately stationary.

    元の言語English
    ジャーナルJournal of the Electrochemical Society
    151
    発行部数3
    DOI
    出版物ステータスPublished - 2004

    Fingerprint

    citric acid
    Citric acid
    Electrodeposition
    Citric Acid
    electrodeposition
    high current
    baths
    Chemical analysis
    Cyclic voltammetry
    Cathodes
    Current density
    cathodes
    Ions
    current density
    Crystalline materials
    ions
    Temperature
    temperature

    ASJC Scopus subject areas

    • Electrochemistry
    • Surfaces, Coatings and Films
    • Surfaces and Interfaces

    これを引用

    Electrodeposition of ZnTe Film with High Current Efficiency at Low Overpotential from a Citric Acid Bath. / Ishizaki, Takahiro; Ohtomo, Takeshi; Fuwa, Akio.

    :: Journal of the Electrochemical Society, 巻 151, 番号 3, 2004.

    研究成果: Article

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