Essential Role of Correlations in Governing Charge Transport in Disordered Organic Materials

S. V. Novikov; D. H. Dunlap; V. M. Kenkre; P. E. Parris; A. V. Vannikov

doi:10.1103/PhysRevLett.81.4472

Essential Role of Correlations in Governing Charge Transport in Disordered Organic Materials

S. V. Novikov, D. H. Dunlap, V. M. Kenkre, P. E. Parris, and A. V. Vannikov

Phys. Rev. Lett. 81, 4472 – Published 16 November 1998

Abstract

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 interactions, even though such correlations have recently been shown to explain the universal electric field dependence observed in these systems. Based on extensive computer simulations of a 3D disorder model that includes such correlations, we present a new formula for analyzing experiments that accurately describes transport in these materials.

Received 26 May 1998

DOI:https://doi.org/10.1103/PhysRevLett.81.4472

Authors & Affiliations

S. V. Novikov^1,2, D. H. Dunlap², V. M. Kenkre², P. E. Parris³, and A. V. Vannikov¹

¹A. N. Frumkin Institute of Electrochemistry, Moscow, Russia
²Center for Advanced Studies, Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131
³Department of Physics, University of Missouri-Rolla, Rolla, Missouri 65401