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In measuring the field dependence of DC conductivity in amorphous dielectrics one often finds, that the logarithm of current plotted vs. square root of electric field yields a straight line. This effect may be due to decrease of occupation probability of a trap, charged when empty, under the influence of the external field. Frenkel and Poole (1) discussed this phenomenon in terms of the Coulomb interactions...
Poly (N-vinylcarbazole), PVK, is a condensed ring heteroaromatic polymeric photoconductor. It has been the subject of many recent investigations, particularly in relation to usage in electrophotography. Its photoconductive properties are fairly well known. However, only a minimum effort has been made to determine its trap structure.1
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