Leakage Currents in Degraded Multi-Layer Ceramic Capacitors.

Abstract

Leakage currents in new and degraded X7R type multi-layer ceramic capacitors show both ohmic and space charge limited behavior. The near-3/2 power voltage characteristic (I proportional to V to the 3/2 power) of new devices can be attributed to electron emission from electrode points. The quadratic behavior (I proportional to V squared) for moderately degraded devices represents space charge limited emission from planar electrodes. This emission may evolve from the point emission due to resistivity decreases that occur in the emission region as a result of ion movement. For these currents, electrons are believed to be the dominant charge carriers. Neither Schottky nor Poole-Frenkel currents were identified.

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Document Details

Document Type
Technical Report
Publication Date
Mar 26, 1984
Accession Number
ADA140157

Entities

People

  • L. C. Burton

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Barium Titanates
  • Capacitors
  • Ceramic Capacitors
  • Charge Carriers
  • Dielectric Permittivity
  • Electromagnetic Fields
  • Electron Emission
  • Electrons
  • Emission
  • Equations
  • Grain Boundaries
  • Heat Of Activation
  • Measurement
  • Photoexcitation
  • Semiconductors
  • Single Crystals
  • Space Charge

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics
  • Space
  • Space - Hall-Effect Thruster