NDLI: Investigating electroluminescence excitation by space charge measurements under transient stress in cross linked polyethylene

Content Provider	IEEE Xplore Digital Library
Author	Hozumi, N. Teyssedre, G. Laurent, C. Fukunaga, K.
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. & Electron. Eng., Toyohashi Univ. of Technol., Japan (Hozumi, N.)
Abstract	Carrier transport in 150 /spl mu/m thick XLPE films under ca. 130 kV/mm was characterized by both transient space charge and EL measurements. Both positive and negative charges were injected from the electrodes. For relatively short stressing time (order of minutes), the field distribution was not significantly changed due to the evolution of these charges. Injected positive and negative charges propagated with similar speed; however, the negative charges were more dispersive in their velocity. It was about 800 seconds after the application of the step voltage when the injected positive and negative charges met in the bulk. A strong EL was observed soon after the step voltage application and decayed quickly within several tens of seconds. Subsequently, the EL intensity showed a gradual increase. The first intense emission was interpreted as an interfacial phenomenon, possibly associated with minute protrusions in the interface. The gradual increase of the signal was correlated with the recombination of two kinds of carriers injected from both electrodes. The EL intensity with periodical application of voltage led to lower intensity. The memory effect was explained as the result of cumulative relaxation of the field around the protrusions.
Sponsorship	IEEE Dielectrics and Elec. Insulation Soc
Starting Page	193
Ending Page	196
File Size	348616
Page Count	4
File Format	PDF
ISBN	0780383486
DOI	10.1109/ICSD.2004.1350323
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-05
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electroluminescence Space charge Current measurement Charge measurement Stress measurement Polyethylene Voltage Pulse measurements Electrodes Plastic films
Content Type	Text
Resource Type	Article

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