Abstract
The diffusion coefficient $(D)$ and drift mobility $(\ensuremath{\mu})$ of molecularly doped polymers have been obtained by Monte Carlo parameter fitting of a theoretical equation to time-of-flight transient photocurrent signals. The logarithm of \ensuremath{\mu} increased linearly with $\sqrt{E}$. The negative field dependence of the mobility that has been observed at low electric field appeared to a superimposition of drift and diffusion. An anomalous field-assisted $D$ was observed. The logarithm of $D$ decreased linearly with ${T}^{\ensuremath{-}2}$.
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