Transport kinetics of triplet excitation in solid chrysene Original Research Article

The results are presented of the investigation on decay kinetics of phosphorescence and delayed fluorescence of solid chrysene prepared by different methods. It is shown that, for all samples, the annihilation kinetics is dispersive with a rate coefficient varying with time as power. The value of the exponent depends on the microscopic properties of the medium. Annealing of samples leads to a decrease in the energetic disorder, but this process is local. Investigation of the time dependence of the rate coefficient of triplet–triplet annihilation for chrysene in porous glass has led to the conclusion that its porous system topology is close to the topology of the three-dimensional percolation cluster.