Title: Excitation localization effects in nanoscale molecular clusters (J-aggregates)
Abstract: An analysis of experimental data from low-temperature selective spectroscopy and single J-aggregate spectroscopy reveals a hierarchy of exciton states within the confines of the absorption band of J-aggregates which are formed by relaxation of an excited state. For J-aggregates, which are characterized by substantial static disorder, strongly localized excitons are found in the long-wavelength edge of the absorption band; they have a discrete energy spectrum and jump mobility, and are not subject to strong relaxation. Delocalized (spatially extended) excitons are excited within the absorption band of the J-aggregates, except at its long-wavelength edge. They are characterized by coherent exciton transport and are the source of self-localized excitons.
Publication Year: 2011
Publication Date: 2011-02-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 7
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