Differences in AC and DC large-area breakdown behavior of polymer thin films

Mikael Ritamäki, Ilkka Rytöluoto, Minna Niittymäki, Kari Lahti, Mikko Karttunen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    12 Citations (Scopus)


    A large-area multiple breakdown measurement using self-healing gold sputtered electrodes was evaluated in determining the AC breakdown characteristics of insulating biaxially oriented polypropylene (BOPP) and BOPP-silica nanocomposite thin films. Results were compared with conventional small area measurements and it is shown that the large-area approach could be extended into AC measurements as long as good quality film-electrode interface in ensured. Special electrode arrangements are needed due to the absence of electrostatic force. AC small-area breakdown strength of pilot-scale films was ramp rate dependent but no such effect was clearly noticed for a commercial product. Conventional DC small-area breakdown measurements were also conducted and the results were compared to previously published large-area multiple breakdown data. The consistent results support the dependency between ramp rate and DC breakdown strength in the studied BOPP-silica nanocomposite.
    Original languageEnglish
    Title of host publication2016 IEEE International Conference on Dielectrics (ICD)
    PublisherIEEE Institute of Electrical and Electronic Engineers
    ISBN (Electronic)978-1-5090-2804-7
    ISBN (Print)978-1-5090-2805-4
    Publication statusPublished - 2016
    MoE publication typeA4 Article in a conference publication
    Event1st International Conference on Dielectrics, ICD 2016 - Montpellier, France
    Duration: 3 Jul 20167 Jul 2016
    Conference number: 1


    Conference1st International Conference on Dielectrics, ICD 2016
    Abbreviated titleICD 2016


    • AC
    • DC
    • dielectric measurement
    • electric breakdown
    • polymer films
    • Weibull distribution


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