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|Title:||Models of bipolar charge transport in polyethylene|
Le Roy, S.
Dissado, Len A.
|Publisher:||American Institute of Physics (AIP)|
|Citation:||Journal of Applied Physics, 2006, 100 (10), pp. 4105-14 (10)|
|Abstract:||We introduce and develop two bipolar transport models which are based on appreciably different physical assumptions regarding the distribution function in the energy levels of trap states. In the first model, conduction is described by an effective mobility of the carriers and the accumulation of stored space charge is taken into account through a single trapping level. In the second model the hypothesis of an exponential distribution function of trap depth is made, with conduction taking place via a hopping process from site to site. The results of simulations of the two models are compared with experimental data for the external current and the space-time evolution of the electrical space charge distribution. The two descriptions are evaluated in a critical way, and the prospects for these models to adequately describe real systems are given.|
|Rights:||Copyright © 2006 American Institute of Physics. Deposited with reference to the publisher's archiving policy available from the SHERPA/RoMEO website. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics, 2006, 100 (10), pp. 4105-14 and may be found at http://jap.aip.org/resource/1/japiau/v100/i10/p104105_s1|
|Appears in Collections:||Published Articles, Dept. of Engineering|
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