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Effect of UV-assisted RTA on the electrical properties of (Ba,Sr) TiO3 films for low temperature embedding of decoupling capacitor

  • Kwang Hwan Cho*
  • , Min Gyu Kang
  • , Chong Yun Kang
  • , Seok Jin Yoon
  • , Youngpak Lee
  • , Jong Hee Kim
  • , Bong Hee Cho
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Polycrystalline Ba0.4 Sr0.6 TiO3 (BST) thin films grown at 350°C with UV-assisted rapidly thermal annealing (RTA) showed a high- k value of 183 at 100 kHz. The 100 nm thick BST film with UV-assisted RTA exhibited a high capacitance density of 16.2 fF/μ m 2 and a low dissipation factor of 0.48% at 100 kHz with a low leakage current density of 1× 10-8 A/ cm2 at 0.5 MV/cm. The quadratic and linear voltage coefficients of capacitances of the BST film with UV-assisted RTA were -155 ppm/ V2 and 231 ppm/V, respectively. All these make the BST decoupling capacitor very suitable for use in radio-frequency circuits and mixed-signal integrated circuits.

    Original languageEnglish
    Pages (from-to)G230-G232
    JournalJournal of the Electrochemical Society
    Volume156
    Issue number12
    DOIs
    Publication statusPublished - 2009

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 7 - Affordable and Clean Energy
      SDG 7 Affordable and Clean Energy

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Renewable Energy, Sustainability and the Environment
    • Surfaces, Coatings and Films
    • Electrochemistry
    • Materials Chemistry

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