Electron correlation effects in electron-hole recombination and triplet-triplet scattering in organic light emitting diodes

S. Ramasesha, S. Mazumdar, Kunj Tandon, Mousumi Das

Research output: Contribution to journalConference article

6 Scopus citations

Abstract

Using a time-dependent model many-body formulation, we follow the electron-hole recombination between a pair of oppositely charged polyene chains and triplet-triplet (T-T) scattering in π-conjugated systems. Electron correlations reduce the overall yields and also lead to large differences between the singlet and triplet yields. External electric field has a strong influence on the recombination products. The fraction of singlet yield, η, increases with the chain length. Heteroatoms also change this ratio significantly, as has been observed experimentally. The outcome of the triplet-triplet scattering is also significantly affected by electron correlations.

Original languageEnglish (US)
Pages (from-to)917-920
Number of pages4
JournalSynthetic Metals
Volume139
Issue number3
DOIs
StatePublished - Oct 9 2003
EventProceedings of the Fifth International Topical Conference - Venice, Italy
Duration: Feb 9 2003Feb 14 2003

Keywords

  • Electroluminescence
  • Lasers
  • Semi-empirical models and model calculations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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