Подвижность носителей заряда в молекулярно допированных полимерных пленках различной толщины
The dependence of the mobility of charge carriers in molecularly doped polycarbonate on the thickness of the polymer was studied at two dopant DEH concentrations (30 and 50 wt %). The mobility of holes in the more concentrated polymer did decrease as the film thickness increased in close agreement with the predictions of the theory of weakly nonequilibrium transport with a dispersion parameter of 0.75. For films with a lower dopant concentration, such a categorical statement cannot be made, because mobility can either decrease as the film thickness increases or remain almost unchanged depending on the method for data processing. For this reason, it is not recommended to use the dependence of the time of flight on film thickness as a criterion for selecting the mechanism of the transport of charge carriers in molecularly doped polymers.