Spacechargelimited currents and trapfilled limit in onedimensional insulators
Abstract
Reference is made to a study by Wilson (1982), which gave an approximate solution for the spacechargelimited current case for the voltage region below the trapfilled limit. This approximate solution is extended here to cover the problem of spacechargelimited currents in onedimensional insulators containing traps, with particular attention given to the trapfilled limit region. While use is made of some of Wilson's concepts, his hypothesis of the lowfield saturated drift velocity is not adhered to. The equations are derived on the assumption that the field and concentrations of free and trapped carriers are constant throughout the samples and are equal to their average values. It is pointed out that results obtained in such a way are known (Lampert and Mark, 1970) to differ from exact solutions by a factor that does not exceed 2.
 Publication:

Journal of Physics D Applied Physics
 Pub Date:
 January 1984
 DOI:
 10.1088/00223727/17/1/018
 Bibcode:
 1984JPhD...17..135S
 Keywords:

 Insulators;
 Solid State Physics;
 Space Charge;
 VoltAmpere Characteristics;
 Approximation;
 Trapped Particles;
 SolidState Physics