A new model for surface potential decay of corona-charged polymers

Chen, George (2010) A new model for surface potential decay of corona-charged polymers. Journal of Physics D: Applied Physics, 43, (5), 055405. (doi:10.1088/0022-3727/43/5/055405).


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Surface potential measurement provides a useful tool to gauge the electrical properties of materials. It has been observed that the potential of a sample with an initial high surface potential decays faster than that with an initial lower surface potential, known as the cross-over phenomenon. The phenomenon was found a few decades ago and various theories and models have been proposed. A common feature of the existing models is based on single charge carrier injection from a corona-charged surface. With our recent space charge measurement results on corona-charged samples, double injection from both electrodes has been verified. Based on this new fact, a new model based on bipolar charge injection is proposed and initial numerical simulation reveals that the surface potential cross-over phenomenon can occur under bipolar charge injection.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1088/0022-3727/43/5/055405
ISSNs: 0022-3727
Divisions : Faculty of Physical Sciences and Engineering > Electronics and Computer Science > EEE
ePrint ID: 268404
Accepted Date and Publication Date:
February 2010Published
Date Deposited: 22 Jan 2010 09:53
Last Modified: 31 Mar 2016 14:16
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/268404

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