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New theory of electrical discharge and breakdown in low‐mobility condensed insulators

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1 Author(s)
Kao, K.C. ; Materials and Devices Research Laboratory, Department of Electrical Engineering, University of Manitoba, Winnipeg, Canada P3T 2N2

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Electrical discharge and breakdown in low‐mobility insulating liquids and solids involve the creation of low‐density domains or channels in the bulk by carrier injection from electrical contacts and subsequently dissociative trapping and recombination as a necessary prelude. Internal discharge such as electrical treeing and breakdown are initiated by impact ionization within such low‐density domains or channels and then followed by an indefinite increase in carrier multiplication in the conduction level that extends the channels and finally destroys the material inside them.

Published in:

Journal of Applied Physics  (Volume:55 ,  Issue: 3 )