Electrical conduction and polarization of silica-based capacitors under electro-thermal poling

Cesar A. Nieves, Rudeger H.T. Wilke, Sean R. Bishop, Michael T. Lanagan, Paul Clem

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electrical conduction in silica-based capacitors under a combined effect of intermediate electric field and temperature (2.5 - 10 kV/mm, 50-300°C) is dominated by localized motion of high mobility ions such as sodium. Thermally stimulated polarization and depolarization current (TSPC/TSDC) characterization was carried out on poled fused silica and AF32 glass samples. Two relaxation mechanisms were found during the depolarization step and an anomalous response for the second TSDC peak was observed. Absorption current measurements were performed on the glass samples and a time-dependent response was observed when subjected to different electro-thermal conditions. It was found that at low temperature (T = 175 °C) and short times, the current follows a linear behavior (I α V) while at high temperature (T = 250 °C), the current follows V0.5. TSPC/TSDC and absorption current measurements results led to the conclusion that (1) Poole-Frenkel dominates conduction at high temperatures and at longer times and that (2) ionic blockage and/or H+/H3O+ injection are responsible for the observed anomalous current response.

Original languageEnglish (US)
Title of host publication96th IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2021 - co-located with 16th IEEE Nanotechnology Materials and Devices Conference, NMDC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages171-174
Number of pages4
ISBN (Electronic)9781665419079
DOIs
StatePublished - 2021
Event96th IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2021 - Vancouver, Canada
Duration: Dec 12 2021Dec 15 2021

Publication series

NameAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Volume2021-December
ISSN (Print)0084-9162

Conference

Conference96th IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2021
Country/TerritoryCanada
CityVancouver
Period12/12/2112/15/21

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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