Effects of hydrogen plasma treatment on sol-gel-derived ZnO studied by impedance spectroscopy

Se Hun Kim, J. H. Han, B. H. Oh, J. K. Park, S. Lee, S. Y. Jeong, Cheol Eui Lee

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Effects of hydrogen plasma treatment on the electrical properties of a sol-gel-derived polycrystalline zinc oxide (ZnO) system have been studied by employing impedance spectroscopy. Complex impedance data were analyzed by employing an equivalent circuit. Hydrogen plasma treatment markedly increased the low-frequency range of constant values of the real part of complex impedance. As a result of plasma treatment, electrical conductivity was found to increase by about two orders of magnitude, with the activation energy being reduced from 0.62 eV to 0.30 eV. The dielectric constant also showed a two-fold increase following the plasma treatment.

    Original languageEnglish
    Article number075901
    JournalMaterials Research Express
    Volume4
    Issue number7
    DOIs
    Publication statusPublished - 2017 Jul

    Bibliographical note

    Publisher Copyright:
    © 2017 IOP Publishing Ltd.

    Keywords

    • Hydrogen plasma treatment
    • Impedance spectroscopy
    • ZnO

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Biomaterials
    • Surfaces, Coatings and Films
    • Polymers and Plastics
    • Metals and Alloys

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