Abstract
A direct experimental comparison is performed for the field dependences of drift and effective mobilities of holes in a polar molecularly doped polymer (polycarbonate containing 30 wt % p-diethylaminobenzaldehyde diphenylhydrazone), which are measured by the time-of-flight method during the bulk irradiation of polymer samples with a pulse of fast electrons. A numerical simulation of the time-of-flight experiments is conducted with the use of the multiple-trapping model with the Gaussian energy trap distribution. The parameters of the model are determined during independent measurements. It is shown that, because of the nonequilibrium state of the transport of holes under the conditions of the time-of-flight experiment, the true Poole–Frenkel constant (0.27 (μm/V)1/2) makes up only a part of the experimentally measured value (0.39 (μm/V)1/2).
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Original Russian Text © A.P. Tyutnev, V.S. Saenko, A.E. Abrameshin, 2016, published in Vysokomolekulyarnye Soedineniya, Seriya A, 2016, Vol. 58, No. 5, pp. 511–518.
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Tyutnev, A.P., Saenko, V.S. & Abrameshin, A.E. The nature of the field dependence of drift mobility in molecularly doped polymers. Polym. Sci. Ser. A 58, 818–824 (2016). https://doi.org/10.1134/S0965545X16050217
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DOI: https://doi.org/10.1134/S0965545X16050217