Channels of the exciton–exciton annihilation in one-dimensional aggregates at low temperature Original Research Article

Exciton–exciton annihilation is implied to be in fact a unique channel of exciton degradation in linear molecular aggregates and conjugated polymers as the pump intensity rises. However, at low temperatures, excitons represent rather immobile than movable quasi-particles due to the localization effect. We analyze possible channels of exciton–exciton annihilation, which seem to be natural ones under the conditions of localization and low temperature, and calculate the corresponding rates.