Electric field DC conductivity dependency of polyimide films

Luke Guinane, Syed A.M. Tofail, Bernard Stenson, John O'Malley, Colm Glynn, Shane Geary, Sombel Diaham

Research output: Contribution to journalArticlepeer-review

Abstract

The isolation behaviour of polyimide thin films has been studied. Properties such as DC conductivity and the threshold electrical fields were obtained through a steady state current measurement under an applied voltage across a metal-insulator-metal capacitor. An inverse relationship has been found between the curing temperature and threshold electric field that would be applied to the structure. The results correlate with high voltage endurance life-Time curves for digital isolators processed at different temperatures.

Original languageEnglish
Article number9215091
Pages (from-to)1440-1445
Number of pages6
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Volume27
Issue number5
DOIs
Publication statusPublished - Oct 2020

Keywords

  • breakdown
  • cure temperature
  • DC conductivity
  • polyimide
  • threshold field

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