Applied Physics A

, Volume 77, Issue 5, pp 623–626

Exciton binding energies in organic semiconductors

Regular Paper

DOI: 10.1007/s00339-003-2182-9

Cite this article as:
Knupfer, M. Appl. Phys. A (2003) 77: 623. doi:10.1007/s00339-003-2182-9


The exciton binding energy is one of the key parameters that govern the physics of many opto-electronic organic devices. It is shown that the previously reported values for the exciton binding energies in many organic semiconductors, which differ by more than an order of magnitude, can be consistently rationalized within the framework of the charging energy of the molecular units, with a simple dependence of the exciton binding energy on the length of these units. The implications of this result are discussed.

Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  1. 1.Leibniz-Institut für Festkörper- und Werkstoffforschung DresdenDresdenGermany

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