Modelling the effect of dipole ordering on charge-carrier mobility in organic semiconductors

The hopping mobility in organic semiconductors is strongly influenced by the correlated on-site noise — i.e. dipole–dipole interaction between neighbouring molecules. In this paper, we use Kinetic Monte Carlo (KMC) to study effect of dipole moment and structural order on hole molecular semiconductors. While charge interactions can be approximately reproduced a global Gaussian disorder model, our present results show that there are non-trivial local effects not incorporated into such an approach. give rise large energy barriers restrict charged particles smaller regions as magnitude increases. only reduce any given system, note if dipoles self-organize, potentially driven itself or increase packing density, negative reduced.