ICAMS / Interdisciplinary Centre for Advanced Materials Simulation


Charge carrier transport in phenylated poly(naphthoylenebenzimidazole)

A. P. Tyutnev, M. L. Keshtov, J. Kundin, V. S. Saenko, E. D. Pozhidaev.

Polymer Science Series B, 43, 219-222, (2001)

Charge carrier transport in pure and phenylated poly(naphthoylenebenzimidazole) was compared by measurements of transient radiation-induced conductivity. Irradiation with single 100-μs pulses of 55-keV electrons was carried out in vacuum at room temperature. Contrary to expectations, the phenylation deteriorated the transport properties of a polymer: the delayed radiation-induced conductivity in phenylated poly(naphthoylenebenzimidazole) was almost 50 times lower than in the initial polymer, with the dispersion parameter decreasing from 0.4-0.25 to ≤0.05. As a result, the drift mobility of charge carriers falls by a few orders of magnitude. The mechanism of such behavior still remains unclear.

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