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.
S. V. Novikov et al., "Essential Role of Correlations in Governing Charge Transport in Disordered Organic Materials," Physical Review Letters, vol. 81, no. 20, pp. 4475-4475, American Physical Society (APS), Nov 1998.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevLett.81.4472
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