Three-Color Doping of Polymer Oleds by Masked Dye Diffusion

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.

This is a preview of subscription content, access via your institution.

References

  1. 1.

    C. W. Tang and S. A. VanSlyke, Appl. Phys. Lett. 51, 913, (1987).

    CAS  Article  Google Scholar 

  2. 2.

    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).

    CAS  Article  Google Scholar 

  3. 3.

    G. E. Johnson, K. M. McGrane, and M. Stolka, Pure Appl. Chem. 67, 761 (1995).

    Article  Google Scholar 

  4. 4.

    J. Shi and C. W. Tang, Appl. Phys. Lett. 70, 1665 (1997).

    CAS  Article  Google Scholar 

  5. 5.

    F. Pschenitzka and J. C. Sturm, Appl. Phys. Lett. 74, 1913 (1999).

    CAS  Article  Google Scholar 

  6. 6.

    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).

    CAS  Article  Google Scholar 

  7. 7.

    T. G. Pavlopoulos, J. H. Boyer, I. R. Politzer, and C. M. Lau, J. Appl. Phys. 60, 4028 (1986).

    CAS  Article  Google Scholar 

  8. 8.

    T. G. Pavlopoulos, C. J. McBee, J. H. Boyer, I. R. Politzer, and C. M. Lau, J. Appl. Phys. 62, 36 (1987).

    CAS  Article  Google Scholar 

  9. 9.

    J. M. Pearson and M. Stolka, Poly(N-vinyl carbazole) (Gordon and Breach Science, New York, 1981), p.130.

    Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to F. Pschenitzka.

Rights and permissions

Reprints and Permissions

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

Download citation