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Three-Color Doping of Polymer Oleds by Masked Dye Diffusion

Published online by Cambridge University Press:  10 February 2011

F. Pschenitzka  and
J. C. Sturm
F. Pschenitzka
Affiliation:
Department of Electrical Engineering, Center for Photonic and Optoelectronic Materials (POEM), Princeton University, Princeton, NJ 08544
J. C. Sturm
Affiliation:
Department of Electrical Engineering, Center for Photonic and Optoelectronic Materials (POEM), Princeton University, Princeton, NJ 08544
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Abstract

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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 558: Symposium B – Flat-Panel Displays and Sensors-Principles, Materials… , 1999 , 513
Copyright
Copyright © Materials Research Society 2000

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References

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