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28 March 2024
 
  » arxiv » cond-mat/0310560

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Temperature dependent fluorescence in disordered Frenkel chains: interplay of equilibration and local band-edge level structure
M.Bednarz ; V.A.Malyshev ; J.Knoester ;
Date 23 Oct 2003
Journal Phys. Rev. Lett. 91, 217401 (2003). DOI: 10.1103/PhysRevLett.91.217401
Subject Disordered Systems and Neural Networks; Materials Science | cond-mat.dis-nn cond-mat.mtrl-sci
AbstractWe model the optical dynamics in linear Frenkel exciton systems governed by scattering on static disorder and lattice vibrations, and calculate the temperature dependent fluorescence spectrum and lifetime. The fluorescence Stokes shift shows a nonmonotonic behavior with temperature, which derives from the interplay of the local band-edge level structure and thermal equilibration. The model yields excellent fits to experiments performed on linear dye aggregates.
Source arXiv, cond-mat/0310560
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