Model for high field conduction in doped polymers

M.M. Perlmann (1989) has published models for conduction with "traps" (potential wells in the range of 0.8 eV) and with a combination of "traps" and "hopping sites" (potential wells in the range of 0.3 eV). However, the model for the latter does not extrapolate into the former as the number of hopping sites goes to zero. As a result, the conductivity cannot be computed for arbitrary densities of traps and hopping sites. A model has been developed based on quantum tunneling between the nearest neighbor and next nearest neighbor "traps" and "hopping sites" to calculate the hopping-induced conductivity, especially at high electric fields. The results are compared with Perlman's data.