Measuring the profile of the emission zone in polymeric organic light-emitting diodes

Malte Christian Gather, Michael Flämmich, Norbert Danz, Dirk Michaelis, Klaus Meerholz

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

The profile of the emission zone (PEZ) in the emissive layer (EML) of polymericorganic light-emitting diodes(OLEDs) is determined by fitting the measured electroluminescencespectrum of the device with a series of simulated spectra that correspond to different emitter locations. The studied OLEDs are based on two different blue-emitting conjugated polymers. In one case, the PEZ is confined to a 10 nm thin sheet at the anode indicating electron dominated current in the EML. In OLEDs based on the other emitter, the PEZ spreads over the entire EML.
Original languageEnglish
Pages (from-to)263301
Number of pages3
JournalApplied Physics Letters
Volume94
Issue number26
DOIs
Publication statusPublished - 30 Jun 2009

Keywords

  • Organic light emitting diodes
  • POLYMERS
  • Emission spectra
  • ANODES
  • CATHODES

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