High field tunneling as a limiting factor of maximum energy density in dielectric energy storage capacitors

Qin Chen, Yong Wang, Xin Zhou, Qiming Zhang, Shihai Zhang

    Research output: Contribution to journalArticle

    84 Scopus citations

    Abstract

    In several low loss dielectric materials, it was observed that the energy loss remains very small under low and medium electric fields but dramatically increases at high field which is believed to be due to tunneling current. The increase of tunneling current at high field is due to the decrease of barrier width and height and is a universal phenomenon in all dielectric materials. Due to the requirement of high energy efficiency, high field conduction places a limit for the maximum operation field, which could be lower than the breakdown field and act as the limiting factor of energy density.

    Original languageEnglish (US)
    Article number142909
    JournalApplied Physics Letters
    Volume92
    Issue number14
    DOIs
    StatePublished - Apr 21 2008

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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