Charge recombination in disordered neat polymer films under imbalanced excitation conditions studied using the recombination time of flight technique

Israel Ravia, Nir Tessler

Research output: Contribution to journalArticlepeer-review

Abstract

It has recently been suggested that the charge recombination rate in amorphous polymers could be affected by the energy distribution of electrons and holes as well as that of the resulting excitons. To test this hypothesis, we developed a new method for measuring charge recombination under highly imbalanced conditions. We find that if the electron density is higher than that of the holes, increasing the electron density further results in reduction of the recombination coefficient. We attribute this to the very different energy distribution between low and high carrier densities, which is not accounted for in the Langevin recombination model.

Original languageEnglish
Article number104510
JournalJournal of Applied Physics
Volume111
Issue number10
DOIs
StatePublished - 15 May 2012

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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