Radiation-induced space charge in polymer film capacitors

Kurtz, S. R.; Anderson, R. A.
November 1986
Applied Physics Letters;11/24/1986, Vol. 49 Issue 21, p1484
Academic Journal
A space-charge mapping technique was used to observe the formation of x-ray-induced space charge in poly(ethylene terephthalate) and polystyrene capacitor structures. Electronic transport processes, responsible for radiation-induced conductivity in these insulators, produced trapped space charge adjacent to the electrodes. These results were consistent with the conclusions of earlier photoconductivity measurements and revealed injection processes that limit the buildup of space charge.


Related Articles

  • Behavior of high-voltage gaps in the presence of large space-charge fields. Friedman, M.; Serlin, V. // Journal of Applied Physics;8/15/1985, Vol. 58 Issue 4, p1460 

    Shows that a high-voltage gap exhibits a nonlinear capacitance behavior in the presence of large space-charge fields. Capacitance of a parallel plates capacitor; Potential energy calculation; Conclusion.

  • Effects of space charge at the conjugated polymer/electrode interface. Mills, C. A.; Taylor, D. M.; Riul, A.; Lee, A. P. // Journal of Applied Physics;4/15/2002, Vol. 91 Issue 8, p5182 

    Films of the polymer poly(4-dicyanomethylene-4H-cyclopenta[2,1-b:3,4-b[sup ′]]dithiophene (PCDM) were electrodeposited onto indium tin oxide (ITO) coated glass substrates. The formation of a polymer was confirmed by the presence of an absorption band at ∼900 nm (∼1.4 eV)...

  • Carrier transport in conducting polymers with field dependent trap occupancy. Kumar, Vikram; Jain, S. C.; Kapoor, Ashok K.; Geens, Wim; Aernauts, Tom; Poortmans, J.; Mertens, R. // Journal of Applied Physics;12/15/2002, Vol. 92 Issue 12, p7325 

    The space charge limited currents J in conducting organic materials often show J∼V[sup m] (where m > 2) dependence on voltage V. Two models have been used extensively to understand this behavior. In one model, the mobility μ is assumed to be dependent on electric field F. In the other...

  • Theory and simulation of the formation and erasure of space-charge gratings in photoconductive polymers. Schildkraut, J. S.; Buettner, A. V. // Journal of Applied Physics;9/1/1992, Vol. 72 Issue 5, p1888 

    Presents a study that described the formation of space charge in a photoconducting polymer. Formulation of the equations; Effect of traps on the formation of a space-charge grating; Erasure of the space-charge grating by uniform illumination.

  • Space charge effects in polymer-based light-emitting diodes studied by means of a polarization sensitive electroreflectance technique. Michelotti, F.; Bussi, S.; Dominici, L.; Bertolotti, M.; Bao, Z. // Journal of Applied Physics;May2002, Vol. 91 Issue 9, p5521 

    We used a single wavelength electro-optical reflection technique to study the creation of space charge distributions in a polymer light emitting diode, by monitoring the real third order nonlinear optical response of the electroluminescent layer. The diode is based on an aluminum/polymer/indium...

  • Relaxation of the space charge created by Fowler–Nordheim injections in metal–oxide–semiconductor capacitors. Sagnes, B.; Moragues, J. M.; Yckache, K.; Jérisian, R.; Oualid, J.; Vuillaume, D. // Journal of Applied Physics;11/1/1996, Vol. 80 Issue 9, p5469 

    Deals with a study which examined relaxation of the space charge created by Fowler-Nordheim injections in metal-oxide-semiconductor capacitors. Experimental details; Summary and results; Conclusions.

  • Regarding the origin of the delayed fluorescence of conjugated polymers. Rothe, Carsten; Monkman, Andy // Journal of Chemical Physics;12/22/2005, Vol. 123 Issue 24, p244904 

    In the first part of this work we revisit and reevaluate the experimental data that lead to the assignment of the origin of the delayed fluorescence (DF) to triplet-triplet annihilation for polyfluorene and to geminate pair recombination in the case of the ladder-type polyparaphenylene (MeLPPP);...

  • Light degradation and voltage drift in polymer light-emitting diodes. Silvestre, G. C. M.; Johnson, M. T.; Giraldo, A.; Shannon, J. M. // Applied Physics Letters;3/12/2001, Vol. 78 Issue 11, p1619 

    It is shown that the voltage drift and light degradation in polymer light-emitting diodes are related and can be explained by the formation of traps and the modification of the space charge in the bulk of the polymer. The energy released by nonradiative carrier recombination is believed to be...

  • Temperature and electric field dependent mobility in poly(3-hexylthiophene) diodes. Giulianini, Michele; Waclawik, Eric R.; Bell, John M.; Motta, Nunzio // Journal of Applied Physics;Jul2010, Vol. 108 Issue 1, p014512 

    Current-voltage (I-V) curves of poly(3-hexylthiophene) (P3HT) diodes have been collected to investigate the polymer hole-dominated charge transport. At room temperature and at low electric fields the I-V characteristic is purely Ohmic whereas at medium-high electric fields, experimental data...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics