Conceptual Frameworks Polaronic Contribution to Transport

An analytical theory based upon the effective medium approach (EMA) has been developed by Fishchuk et al. [70]. They consider the superposition of disorder and polaron effects and treat the elementary charge transfer process at moderate to high temperatures in terms of symmetric Marcus rates instead of Miller-Abrahams rates (see below). The predicted temperature and field dependence of the mobility is 

These expressions have been successfully applied to polymeric systems of practical relevance, as detailed in the next section. 

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