Electroluminescence of Ultraviolet and Thermally Aged Low Density Polyethylene


Mills, D H, Lewin, P L, Chen, G and Mohd Ariffin, A (2010) Electroluminescence of Ultraviolet and Thermally Aged Low Density Polyethylene. In, 2010 IEEE International Conference on Solid Dielectrics, Potsdam, Germany, 04 - 09 Jul 2010. IEEE, 68-71.

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Description/Abstract

It has been postulated that long term ageing of low-density polyethylene (LDPE) is due to the movement of space charge within the dielectric. Electroluminescence (EL) has been shown as an alternative method to investigate charge movement within a dielectric. Under ac fields, EL is related to the injection, trapping and recombination of charge carriers at the sample interface. This work investigates the change in EL emission due to the ultraviolet (UV) ageing of additive free 100μm LDPE films. Samples are aged in an oven using a 36W UV fluorescent tube at a temperature of 313K. This causes bond breakages and increased carbonyl and hydroxyl groups as confirmed by Fourier transform infrared (FTIR) spectroscopy. Weibull breakdown statistics also show an increasing reduction in the ac ramp breakdown strength with ageing time. EL images and temporal measurements are collected using a deep cooled charge coupled device (CCD) camera and show an initial reduction in the EL with ageing. Further ageing shows a field dependence of the EL.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Event Dates: 4 - 9 July 2010
ISBNs: 9781424474929
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science
Faculty of Physical Sciences and Engineering > Electronics and Computer Science > EEE
ePrint ID: 271355
Date Deposited: 07 Jul 2010 11:28
Last Modified: 27 Mar 2014 20:16
Publisher: IEEE
Contact Email Address: pll@ecs.soton.ac.uk
Further Information:Google Scholar
ISI Citation Count:0
URI: http://eprints.soton.ac.uk/id/eprint/271355

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