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Dynamical simulation of exciton dissociation in poly(para-phenylenevinylene) systems
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Computational Physics .
2005 (English)In: Journal of Luminescence, ISSN 0022-2313, Vol. 112, no 01-Apr, 357-362 p.Article in journal (Refereed) Published
Abstract [en]

We report results from simulations of field-induced exciton dissociation in poly(para-phenylenevinylene) (PPV). The simulations were performed by solving the time-dependent Schrodinger equation and the lattice equation of motion simultaneously and non-adiabatically. The electronic system and the coupling of the electrons to the lattice were described by an extended three-dimensional version of the Su-Schrieffer-Heeger (SSH) model. The dissociation time is shown to depend strongly on the field strength as well as on the excitation energy and the lattice energy. The separation process is highly non-adiabatic and involves a significant rearrangement of the electron distribution. (c) 2004 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2005. Vol. 112, no 01-Apr, 357-362 p.
Keyword [en]
exciton dissociation, polarons
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-46123DOI: 10.1016/j.ilumin.2004.09.034OAI: diva2:267019
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-12

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Stafström, Sven
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