Combined isothermal and non-isothermal techniques to analyze charge trapping and stability in insulating materials

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28 Citations (Scopus)

Abstract

Taking into account the time-consuming trapping and detrapping of electric charge in insulating materials, a sequential protocol for the investigation the trapping sites and trapped charge stability is proposed. The method is demonstrated for Teflon FEP-A. Elemental peaks are obtained whose maxima shift with increasing field from 456 to 486 K and are characterized by activation energies that increase from 1.1 to 1.9 cV. The relaxation time of the trapped charge, at 523 K, increases as the amount of charge stored in the material decreases and explains the good charge stability for Teflon FEP-A electrets.
Original languageEnglish
Pages (from-to)L1160-L1162
Number of pages3
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume40
Issue number11 A
Publication statusPublished - 1 Nov 2001

Keywords

  • Charge stability
  • Isothermal and nonisothermal techniques
  • Trapping sites

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