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.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
C. W. Tang and S. A. VanSlyke, Appl. Phys. Lett. 51, 913, (1987).
J. H. Burroughes, D. D. C. Bradley, A. R. Brown, R. N. Marks, K. Mackay, R. H. Friend, P. L. Burns, and A. B. Holmes, Nature (London) 347, 539 (1990).
G. E. Johnson, K. M. McGrane, and M. Stolka, Pure Appl. Chem. 67, 761 (1995).
J. Shi and C. W. Tang, Appl. Phys. Lett. 70, 1665 (1997).
F. Pschenitzka and J. C. Sturm, Appl. Phys. Lett. 74, 1913 (1999).
C. C. Wu, J. C. Sturm, R. A. Register, J. Tian, E. P. Dana, and M. E. Thompson, IEEE Trans. Electron Devices 44, 1269 (1997).
T. G. Pavlopoulos, J. H. Boyer, I. R. Politzer, and C. M. Lau, J. Appl. Phys. 60, 4028 (1986).
T. G. Pavlopoulos, C. J. McBee, J. H. Boyer, I. R. Politzer, and C. M. Lau, J. Appl. Phys. 62, 36 (1987).
J. M. Pearson and M. Stolka, Poly(N-vinyl carbazole) (Gordon and Breach Science, New York, 1981), p.130.
About this article
Cite this article
Pschenitzka, F., Sturm, J.C. Three-Color Doping of Polymer Oleds by Masked Dye Diffusion. MRS Online Proceedings Library 558, 513–518 (1999). https://doi.org/10.1557/PROC-558-513