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Proceedings Paper

Energetic disorder in organic polymeric photoconductors
Author(s): A. Kadashchuk; Stanislav Nespurek; N. Ostapenko; V. Zaika
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Paper Abstract

The low-temperature thermoluminescense (TSL) technique has been applied for probing the energetic disorder of localized states in poly(methyl-phenylsilylene) (PMPSi) combining the TSL studies and transport properties as determined by photocurrent transients. The results are described in terms of the disorder model and the energetic relaxation of photogenerated charge carriers within a manifold of the states of Gaussian distribution. Analysis both of the energetic position of the TSL peak maximum and the shape of its high energy wing allowed to extract a parameter characterized the intrinsic energetic disorder in PMPSi, the value of which coincided well with the width of the density-of-states determined from transport measurements. The interpretation of results leads to conclusion that although the disorder is the dominant factor, the polaron contribution should be taken into account for the description of the charge carrier transport in PMIPSi. The problem of the photochemical stability of PMPSi as well as the appearance of new trapping centers, is briefly outlined.

Keywords: organic polymeric photoconductors, poly(mcthyl-phenylsilylene), energetic disorder, charge carrier transport, thermoluminescence.

Paper Details

Date Published: 23 September 1998
PDF: 13 pages
Proc. SPIE 3488, Nonlinear Optics of Liquid and Photorefractive Crystals II, (23 September 1998); doi: 10.1117/12.323715
Show Author Affiliations
A. Kadashchuk, Institute of Physics (Ukraine)
Stanislav Nespurek, Institute of Macromolecular Chemistry (Czech Republic)
N. Ostapenko, Institute of Physics (Ukraine)
V. Zaika, Institute of Physics (Ukraine)

Published in SPIE Proceedings Vol. 3488:
Nonlinear Optics of Liquid and Photorefractive Crystals II
Gertruda V. Klimusheva, Editor(s)

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