External coupling and cathode effects in organic light-emitting devices: Modeling and experiments

M. H. Lu, J. C. Sturm

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The emission of light and the external coupling after appropriate excitons have been formed in the organic light-emitting devices have been investigated. A combined classical and quantum mechanical model was used to calculate the distribution of the internally emitted light into the externally emitted and various waveguided modes in an organic light-emitting device on planar substrates. The exciton lifetime in the OLED cavity was calculated by a Green's function formalism, with a focus on the non-radiative energy transfer to the cathode. Various efficiency measures as a function of the thickness of the indium-tin-oxide anode were calculated and the numerical results were in agreement with the measured external quantum efficiencies.

Original languageEnglish (US)
Pages (from-to)187-196
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


  • Organic light-emitting devices
  • Out coupling


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