Journal
JOURNAL OF LUMINESCENCE
Volume 128, Issue 12, Pages 2019-2026Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2008.07.001
Keywords
Internal conversion; Frenkel excitons; Interstate transitions; Pentacene single crystal
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Funding
- Center of Organic Electronics (COE)
- Swedish Foundation of Strategic Research
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Internal conversion is the dominant relaxation channel from higher lying excited states in molecular crystals and involves the transfer of energy from the electronic system to the lattice. In this work, we present results from simulations of the nonradiative relaxation process with an emphasis on both intraand interband transitions. We find the internal conversion process to be strongly nonadiabatic and the associated relaxation time in the case of large energy excitations to be limited by the transitions made between states of different bands. (C) 2008 Elsevier B.V. All rights reserved.
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