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

M. Ritamäki, I. Rytöluoto, M. Niittymäki, K. Lahti, M. Karttunen

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

7 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 publication Dielectrics (ICD), 2016 IEEE International Conference on
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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