Three-color doping of polymer OLEDs by masked dye diffusion

F. Pschenitzka, J. C. Sturm

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


A method to locally pattern the distribution of dye by diffusion into the polymer film of organic light-emitting diodes is introduced. Using a large-area diffusion source, the diffusion of dye into the polymer film can be controlled with a shadow mask. The materials used are the polymer poly(9-vinylcarbazole) (PVK) combined with electron transport molecules (PBD), and the dyes bimane, coumarin 6 and Nile red. The temperature dependence of the diffusion is investigated along with the effect of annealing of the polymer film. A model of the dye distribution is introduced and estimations of the dye profile based on this model and PL measurement are discussed. A 3-color integrated device was demonstrated.

Original languageEnglish (US)
Pages (from-to)513-518
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
StatePublished - 2000
EventThe 1999 MRS Spring Meeting - Symposium B 'Flat-Panel Displays and Sensors-Principles, Materials and Processes' - San Francisco, CA, USA
Duration: Apr 4 1999Apr 9 1999

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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