QUASI-BALLISTIC MODEL OF ELECTRON-MOBILITY IN LIQUID HYDROCARBONS

A phenomenological model of electron mobility in liquid hydrocarbons i s presented, which incorporates ballistic motion in the quasi-free sta te, showing that this effect predominates in the low-mobility case. Ev en for infinite quasi-free mobility finite overall mobility results du e to random cycles of trapping and detrapping. Experimental comparison for n-hexane, a typical low-mobility liquid, reveals quasi-free mobil ity, trap density and binding energy in the trap at room temperature r espectively as almost-equal-to 100 cm2/V s, 10(19) cm-3 and 0.15 eV.