High-energy density in aromatic polyurea thin films

Yong Wang, Xin Zhou, Minren Lin, Q. M. Zhang

    Research output: Contribution to journalArticlepeer-review

    70 Scopus citations


    This letter investigates dielectric responses of aromatic polyurea thin films fabricated through vapor deposition polymerization. The high quality polymer films exhibit high breakdown field (800 MV/m) and high-energy density (>12 J/cm3) at room temperature. These values decrease slightly from room temperature to 180 °C. Linear dielectric responses were found in the films even under high fields and high temperatures with a high charge-discharge efficiency (>90%). These high performance features make aromatic polyurea attractive for high-energy density capacitors, especially under high temperatures.

    Original languageEnglish (US)
    Article number202905
    JournalApplied Physics Letters
    Issue number20
    StatePublished - 2009

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)


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