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Measurement of electric charge in solid insulators by influence non destructive methods. The thermal step method

P. NOTINGHER jr.1,* , S. AGNEL1, J. CASTELLON1, A. TOUREILLE1, L. BOYER1, O. FRUCHIER1

Affiliation

  1. Institut d’Electronique du Sud, Université Montpellier 2 / CNRS, Montpellier, France

Abstract

Non-destructive methods for measuring electric charge and polarization in solid dielectric materials have been set up in recent years. Their common principle is related to the influence charges which appear at the electrodes of a sample containing space charge. When the material is submitted to an external disturbance, the influence charges vary, giving birth to a transient current or voltage signal, from which charge density and electric field distributions across the sample can be calculated. The use of adapted stimuli, which do not alter the electrical state of the sample, allows monitoring the time evolution of the charge. The most employed methods, based on pressure or thermal stimuli, are briefly reviewed in this paper. A thermal technique, namely the Thermal Step Method, is brought in sharper focus. Results obtained on materials and structures for electrical and electronic applications are presented..

Keywords

Non-destructive method, Thermal step method, Polarization, Insulator.

Submitted at: Feb. 11, 2009
Accepted at: May 28, 2009

Citation

P. NOTINGHER jr., S. AGNEL, J. CASTELLON, A. TOUREILLE, L. BOYER, O. FRUCHIER, Measurement of electric charge in solid insulators by influence non destructive methods. The thermal step method, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 5, pp. 655-665 (2009)