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Drift mobility of excess charge carriers in molecularly doped polymers upon photo-and radiation-induced charge generation

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Abstract

Comparative experiments on molecularly doped (with aromatic hydrazone) polycarbonate were performed to measure the drift mobility of excess charge carriers using carrier generation by exposure to light and ionizing radiation. Measurements showed practically complete coincidence of both mobility values and signal shapes. Compared were the results of measurements on polymer specimens with various thicknesses supported on substrates with different surface roughness, as well as for samples with or without an injecting amorphous-selenium layer. Dispersive carrier transport was observed in all cases. However, current transients sometimes displayed a plateau, depending on the sample preparation conditions. As the magnitude of generated (injected to the polymer layer) charge increased, a current spike appeared by the end of the transit time, thus indicating the emergence of local space-charge-limited current.

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Authors and Affiliations

  1. Frumkin Institute of Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    V. A. Kolesnikov

  2. Moscow State Institute of Electronics and Mathematics, Trekhsvyatitel’skii per. 3/12, Moscow, 109028, Russia

    V. S. Saenko, A. P. Tyutnev & E. D. Pozhidaev

Authors
  1. V. A. Kolesnikov
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  2. V. S. Saenko
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  3. A. P. Tyutnev
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  4. E. D. Pozhidaev
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Additional information

Original Russian Text © V.A. Kolesnikov, V.S. Saenko, A.P. Tyutnev, E.D. Pozhidaev, 2006, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2006, Vol. 48, No. 1, pp. 57–65.

This work was supported by the Russian Foundation for Basic Research, project no. 05-03-32312.

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Kolesnikov, V.A., Saenko, V.S., Tyutnev, A.P. et al. Drift mobility of excess charge carriers in molecularly doped polymers upon photo-and radiation-induced charge generation. Polym. Sci. Ser. A 48, 46–52 (2006). https://doi.org/10.1134/S0965545X0601007X

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  • DOI: https://doi.org/10.1134/S0965545X0601007X

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