ELECTRON-MOBILITY IN LIQUID HYDROCARBONS - APPLICATION OF THE QUASI-BALLISTIC MODEL

The quasi-ballistic model of transport, recently introduced by the aut hor (Chem. Phys. Letters 207 (1993) 245), has been applied to eleven h ydrocarbon liquids in which the electron mobility is less than 10 cm(2 ) V-1 s(-1). In all cases except benzene a combination of a trap densi ty similar to 10(19) cm(-3) and a quasi-free mobility similar to 100 c m(2) V-1 s(-1) fits the experimental data quite well. Other possible r anges for this pair of values are indicated. Within the context of the model, activation energy for mobility seems approximately proportiona l to the binding energy of the electron in the trap, although not nece ssarily equal to it.