ESSENTIAL ROLE OF CORRELATIONS IN GOVERNING CHARGE-TRANSPORT IN DISORDERED ORGANIC MATERIALS

The transport of photoinjected charges in disordered organic films is often interpreted using a formula based on a Gaussian disorder model ( GDM) that neglects spatial correlations due to charge-dipole interacti ons, even though such correlations have recently been shown to explain the universal electric field dependence observed in these systems. Ba sed on extensive computer simulations of a 3D disorder model that incl udes such correlations, we present a new formula for analyzing experim ents that accurately describes transport in these materials. [S0031-90 07(98)07626-1].