科研之友
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摘要
Numerical Monte Carlo simulation has been used to calculate the time dependences of the probability of survival of geminate pairs and geminate recombination. The transport of geminate pairs occurs by hopping between centers forming a cubic lattice. Along with isoenergetic centers, the lattice contains a few traps exponentially distributed in energy. The model is applicable to disordered polymers. The dependence of the kinetics of geminate recombination on the initial separation of charges in the pair, the relative concentration of traps, and the characteristic depth of the energy distribution of traps is studied. The limits of applicability of the analytical theory based on the diffusion-drift approximation for the dispersion transport of geminate pairs are established.
- 出版日期2010-7
