The electroluminescence of gamma-irradiated polyethylene at 77K

Blake, Anna; Randle, K.

doi:10.1088/0022-3727/10/5/017

Cited by 10 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Light is generated subsequent to their recombination. It is shown that the isothermal luminescence can be enhanced on application of an electric field [96,97]. This process, sometimes also referred as 'electroluminescence' [96], is due to the field-assisted detrapping of trapped electrons and must not be confused with the current meaning of EL used in this paper.…”

Section: Polyolefinsmentioning

confidence: 89%

Optical emission due to space charge effects in electrically stressed polymers

Laurent

Massines

Mayoux

1997

IEEE Trans. Dielect. Electr. Insul.

109

View full text Add to dashboard Cite

Electrical wear-out and dielectric breakdown of insulating polymers involve dissipation to the lattice of the energy of mobile or trapped space charges. Optical emissions are proof of such energy releases and can be used to define the onset of electrical aging and to investigate the dissipation mechanisms. They also could provide a basis for monitoring the degradation rate. The situation considered is that of a material subjected to a voltage stress in the absence of any gas discharge, i.e., the light does not originate from a gaseous plasma. Depending on the type of material and experimental configuration, light emission can be due to excited states of the solid itself and/or of dissolved or adsorbed gas molecules. The polymers of concern are practical materials used as electrical insulation in cables, capacitors, motors, transformers, etc. This review attempts to bring together the published data on electroluminescence of insulating polymers and to discuss the relationship between light emission, space charge, and polymer degradation.

show abstract

Section: Polyolefinsmentioning

confidence: 89%

Optical emission due to space charge effects in electrically stressed polymers

Laurent

Massines

Mayoux

1997

IEEE Trans. Dielect. Electr. Insul.

109

View full text Add to dashboard Cite

show abstract

“…It means the barrier height of the traps is reduced with increasing voltage because the activation energy usually is taken as the potential of barrier height. In addition, the conductance of SiNC film at high voltage region exhibits exponential dependence on V 1/2 and T −1 , which shows Poole-Frenkel type dependence, [12][13][14][15] as shown in Figs. 2 and 4.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, transport mechanism at high voltage region is dominated by the filed enhanced thermal detrapping mechanism. [12][13][14][15] When voltage is applied on the device, holes are injected into SiNC film through p-Si substrate. At low voltage part, a large number of carriers are trapped in such kind of relatively deeper traps, providing a precondition for the detrapping process.…”

Section: Resultsmentioning

confidence: 99%

Carrier transport by field enhanced thermal detrapping in Si nanocrystals thin films

Zhou

Uchida

Mizuta

et al. 2009

Journal of Applied Physics

View full text Add to dashboard Cite

Postdeposition thermal annealing and material stability of 75 °C hydrogenated nanocrystalline silicon plasmaenhanced chemical vapor deposition films J. Appl. Phys. 98, 034305 (2005); 10.1063/1.1993777 Schottky junction properties on high quality boron-doped homoepitaxial diamond thin filmsThe carrier transport at high voltage region in Si nanocrystal ͑SiNC͒ thin films has been investigated. The current-voltage measurements demonstrate that at high voltage region, conductance exponentially depends on V 1/2 . The activation energy, measured from the temperature dependence of the current-voltage ͑I-V͒ characteristics, decreases with an increase in the applied voltage. These results indicate that field enhanced detrapping dominates transport mechanism in the SiNC films at high voltage region. The possible influence of metal/semiconductor contacts on V 1/2 dependence has been excluded through the activation energy measurement on different work-function metals as electrodes. The position of the traps contributing to the detrapping processes is concluded to be at interfaces of SiNC/ SiO 2 since H 2 annealing drastically decreases the activation energy. The reasons why experimental results demonstrate no accordance with the material parameter V ‫ء‬ of Poole-Frenkel expression have been discussed based on nanostructure characteristics of SiNC film.

show abstract

Electron and photon emission accompanying deformation and fracture of polycarbonate

Zimmerman

Langford

Dickinson

et al. 1993

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

Electron and photon emission accompanying tensile loading and failure of polycarbonate show weak emissions during the onset of neck formation and intense emissions during the fracture event itself. These results are interpreted in terms of formation of active species by bond breaking followed by emission driven by energy released by recombination. Fast time scale measurements during fracture show that intense electron and photon emission typically begins about 50 μs prior to the completion of fracture and is most intense at the completion of fracture. The gradual onset reflects the final stages of growth of the failure‐initiating defect. Defect growth was monitored by measuring the intensity of a light beam transmitted through the gauge length of the sample; the transmission is sensitive to scattering by surface and bulk defects. A marked decrease in transmission begins some tens of ms prior to fracture due to scattering from the fracture‐initiating defect. These measurements allow accurate correlations of defect growth with the onset of the electron and photon signals. © 1993 John Wiley & Sons, Inc.

show abstract

The electroluminescence of gamma-irradiated polyethylene at 77K

Cited by 10 publications

References 12 publications

Optical emission due to space charge effects in electrically stressed polymers

Optical emission due to space charge effects in electrically stressed polymers

Carrier transport by field enhanced thermal detrapping in Si nanocrystals thin films

Electron and photon emission accompanying deformation and fracture of polycarbonate

Contact Info

Product

Resources

About