Energy dependence of optically induced exciton fission

C. E. Swenberg, M. A. Ratner, N. E. Geacintov

Research output: Contribution to journalArticle

Abstract

A general discussion of the kinematics of optically induced fission in organic crystals is presented. Explanations are given for the nonoccurrence of this phenomenon in certain systems, and a theoretical interpretation is offered for the photon energy dependence of the magnetic field effect on the prompt fluorescence of solid tetracene at 77°K. The structure observed by Moller and Pope below 30000 cm-1 is interpreted as a progression in the totally symmetric C-H stretching mode, where the Franck-Condon vibrational coupling constant g for the correlated pair singlet-triplet transition is found to be of the order of unity. Several experiments to test the predictions of the theory are suggested.

Original languageEnglish (US)
Pages (from-to)2158-2162
Number of pages5
JournalThe Journal of Chemical Physics
Volume60
Issue number5
DOIs
StatePublished - 1974

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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