High-energy density in aromatic polyurea thin films

Yong Wang, Xin Zhou, Minren Lin, Qiming Zhang

    Research output: Contribution to journalArticle

    46 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 - Jun 1 2009

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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