Model Diffusion as a Random Walker. Luminescence is proportional to the Survival Probability.
KSC theory {Klein, 1982 #185}, radiative decay component:
á WR ñ = the mean radiative rate in the system. Rosenstock approximation for absorption of random walkers on a lattice by randomly distributed perfect traps{Rosenstock, 1969 #186}. á N(t)ñ is the mean number of distinct lattice sites visited by a random walker in time t.
where Deff is the effective exciton diffusivity.
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