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High Energy Chemistry

, Volume 52, Issue 5, pp 390–399 | Cite as

Excited Electron–Hole States in Molecular Chains

  • V. A. Benderskii
  • E. I. Kats
Photonics

Abstract

The eigenvalues and the eigenfunctions of molecular excitons, charge-transfer excitons, and electron–hole pairs have been found in the approximation of electron and hole transfer between the lowest unoccupied and highest occupied orbitals in a rigid molecular chain of identical photosensitive molecules, the recognized model of organic solar cells. It has been shown that as the Coulomb binding energy decreases, the wave functions become superposition of functions of the increasing number of sites and the decay time, determined by electron or hole transitions, is shorter that the transfer time of the exciton as a whole, so that energy transfer and charge transfer become interrelated processes.

Keywords

molecular excitons organic solar cells photoelectric effect energy transfer charge separation 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Institute of Problems of Chemical PhysicsRussian Academy of SciencesChernogolovkaRussia
  2. 2.Landau Institute of Theoretical PhysicsRussian Academy of SciencesChernogolovkaRussia

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