Hole and electron drift mobilities in N-picrylarylamine doped polycarbonate
films have been studied by conventional time-of-flight techniques. The cha
rge transport molecules contain both electron acceptor and donor functional
ities. Electron mobility has a similar value for all the systems since the
transport molecules exhibit very close electron affinity. Hole mobility dep
ends on the donor functionality. The results can be fit well into a correla
ted disorder model when energetic features of the transport molecules are a
lso taken into account. For quantum-chemistry calculations, the semi-empiri
cal MNDO/PM3 and ZINDO/S methods were used.