Disorder in Charge Transport in doped polymers

Authors

  • Prof. Mark Van der Auweraer,

    Corresponding author
    1. Laboratory for Molecular Dynamics and Spectroscopy K. U. Leuven Celestijnenlaan 200-F, B-3001 Heverlee (Belgium)
    • Laboratory for Molecular Dynamics and Spectroscopy K. U. Leuven Celestijnenlaan 200-F, B-3001 Heverlee (Belgium)
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    • received a Ph.D. degree in chemistry fiom the K. U. Leuven in 1981. After post-doctoral work with an Alexander von Humboldt, fellowship at the Fritz-Haber-Institut (Berlin), he returned to K. U. Leuven, where he habilitated in 1990. He was awarded the Granimaticakis- Neumann Prize in 1992. His research interests are focused on electron and excitation transfer in organized systems and photconduction.

  • Prof. Frans C. De Schryver,

    Corresponding author
    1. Laboratory for Molecular Dynamics and Spectroscopy K. U. Leuven Celestijnenlaan 200-F, B-3001 Heverlee (Belgium)
    • Laboratory for Molecular Dynamics and Spectroscopy K. U. Leuven Celestijnenlaan 200-F, B-3001 Heverlee (Belgium)
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    • was awarded his Ph.D by the K. U. Leuven in 1964 and after two year's post-doctoral research as a Fullbright Fellow with Prof. C. S. Marvel at the University of Arizona, Tucson, returned to Leuven, where he became full professor in 1975. His research interests are the photochemistry and photophysics of organic molecules with emphasis on macromolecules and supramolecular structures. He was recently awarded a Humholdt Research Prize.

  • Dr. Paul M. Borsenberger,

    1. Office Imaging Division, Eastman Kodak Company Rochester, NY 14650-01714 (USA)
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    • originally from St. Louis, received a B.S. in metallurgy from the Missouri School of Mines and Metallurgy. Following three years in the U.S. Army, he earned M.S. and Ph.D. degrees in materials science at Stanford University. In 1967 he joined the Research Laboratories of Eastman Koduk Company. Since then his research interests have been related to xerography and photoconductivity of disordered solids.

  • Prof. Heinz Bässler

    1. Fachbereich Physikalische Chemie, Philipps-Universität Hans-Meerwein-Strasse, D-35032 Marburg (FRG)
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    • is professor of physical chemistry at the Department (“Faclihereich”) of Physical Chemistry at Philipps- Universität in Marburg, FRG. He received his Ph.D. in physics from the Technical University in Munich in 1963. After a post-doctoral year in Philadelphia, he moved to his present position in 1970. His research interests include electro-optic properties of organic solids.


  • M. V.d. A. is a “Onderzoeksleider” of the Belgian “Fonds voor Kollektief Fundamenteel Onderzoek”. The authors thank Agfa-Gevaert N.V. for financial support. The continuing support of the Belgian “Fonds voor Kollektief Fundamenteel Onderzoek” and the Ministry of Science Programming through IUAP III-040 and IUAP II-16 is gratefully acknowledged. The authors are indebted to D. Terrell (Agfa-Gevaert) for the sample of pEFTP. H. B. thanks the “Deutsche Forschungsgemeinschaft” and the “Fond der Chemischen Industrie”.

Abstract

Charge transport in molecular doped polymers has important applications in xerography, as well as being a theoretical challenge. Its investigation by determination of transient photocurrents is reviewed, with experiments and pertinent theories, such as hopping in a Gaussian density of states and the small polaron model, being outlined. The temporal features of the photocurrents, the field and temperature dependence of the charge carrier mobilities, and the influence of molecular properties—and what can be inferred from these—are discussed.

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