Journal of Materials Science

, Volume 41, Issue 10, pp 2767–2770 | Cite as

Electrical properties of polymer/metal interface in polymer light-emitting devices: electron injection barrier suppression

  • C. A. Olivati
  • A. J. F. Carvalho
  • D. T. Balogh
  • R. M. Faria


The electrical characterization of a high efficient multilayer polymer light emitting diode using poly[(2-methoxy-5-hexyloxy)-p-phenylenevinylene] as the emissive layer and an anionic fluorinated surfactant as the electron transport layer was performed. For the sake of comparison, a conventional single layer device was fabricated. The density current vs. voltage measurements revealed that the conventional device has a higher threshold voltage and lower current compared to the surfactant modified device. The effective barrier height for electron injection was “suppressed”. The influence of the interfaces and bulk contributions to the dc and high frequencies conductivities of the devices was also discussed.


Surfactant Electron Injection Emissive Layer Electron Transport Layer Modify Device 
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  1. 1.
    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 347 (1990) 539.CrossRefGoogle Scholar
  2. 2.
    W. BRÜTTING, S. BERLEB and A. G. MÜCKL, Organic Elec. 2 (2001) 1.CrossRefGoogle Scholar
  3. 3.
    V. I. ARKHIPOV, E. V. ENNELLANOVA, Y. H. TAK and H. BÄSSLER, J. Appl. Phys. 84 (1998) 848.CrossRefGoogle Scholar
  4. 4.
    C. J. BRABEC and N. S. SARICIFTCI, in “Semiconducting Polymers: Chemistry, Physics and Engineering,” 1st edn. (Willey, VCH, 2000).Google Scholar
  5. 5.
    A. MARLETTA, E. PIOVESAN, N. C. SOUZA, C. A. OLIVATI, D. T. BALOGH, N. O. DANTAS, R. M. FARIA and O. N. OLIVEIRA JR, J. Appl. Phys. 94 (2003) 5592.CrossRefGoogle Scholar
  6. 6.
    G. E. JABBOUR, Y. KAWABE, S. E. SHAHEEN, J. F. WANG, M. M. MORRELL, B. KIPPELEN and N. PEYGHAMBARIAN, Appl. Phys. Lett. 71 (1997) 1762.CrossRefGoogle Scholar
  7. 7.
    S. H. KIM, K. H. CHOI, H. M. LEE, D. H. HWANG, L. M. DO, H. Y. CHU and T. ZYUNG, J. Appl. Phys. 87 (2000) 882.CrossRefGoogle Scholar
  8. 8.
    A. EISENBERG, Macromolecules 23 (1990) 4098.CrossRefGoogle Scholar
  9. 9.
    T. W. LEE, O. O. PARK, L. M. DO, T. Y. ZYUNG, T. AHN and H. K. SHIM, J. Appl. Phys. 90 (2001) 2128.CrossRefGoogle Scholar
  10. 10.
    G. MARTINI, S. RISTORI and M. VISCA, “Ionomers: Characterization, Theory and Application,” edited by Shulamith Schlick, (CRC Press, New York, 1996).Google Scholar
  11. 11.
    Y. CAO, G. YU and A. J. HEEGER, Adv. Mater. 10 (1998) 917.CrossRefGoogle Scholar
  12. 12.
    Y. H. NIU, H. MA, Q. XU and A. K. Y. JEN, Appl. Phys. Lett. 86 (2005) 083504.CrossRefGoogle Scholar
  13. 13.
    F. M. MARCONI, R. F. BIANCHI, R. M. FARIA and D. T. BALOGH, Mol. Cryst. Liq. Cryst. 374 (2002) 475.CrossRefGoogle Scholar
  14. 14.
    C. A. OLIVATI, M. FERREIRA, A. J. F. CARVALHO, D. T. BALOGH, O. N. OLIVEIRA JR., H. VON SEGGERN and R. M. FARIA, Chem. Phys. Lett. 408 (2005) 31.CrossRefGoogle Scholar
  15. 15.
    I. H. CAMPBELL, D. L. SMITH and J. P. FERRARIS, Appl. Phys. Lett. 66 (1995) 3030.CrossRefGoogle Scholar
  16. 16.
    A. J. CAMPBELL, D. D. C. BRADLEY and D. G. LIDZEY, J. Appl. Phys. 82 (1997) 6326.CrossRefGoogle Scholar
  17. 17.
    C. J. F. BÄTTCHER and P. BORDEWIJK, in “Theory of electric polarization,” (Elsevier Scient. Pub. Comp., Netherlands, 1978).Google Scholar
  18. 18.
    I. H. CAMPBELL, S. RUBIN, T. A. ZAWODZINSKI, J. D. KRESS, R. L. MARTIN, D. L. SMITH, N. N. BARASHKOV and J. P. FERRARIS, Phys. Rev. B 54 (1996) 14321.Google Scholar
  19. 19.
    R. C. HUGHES, J. Appl. Phys. 51 (1980) 5933.CrossRefGoogle Scholar

Copyright information

© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  • C. A. Olivati
    • 1
  • A. J. F. Carvalho
    • 2
  • D. T. Balogh
    • 2
  • R. M. Faria
    • 2
  1. 1.Depto de Física, Química e Biologia, Faculdade de Ciências e TecnologiaUniversidade Estadual PaulistaPresidente PrudenteBrazil
  2. 2.Instituto de Física de São CarlosUniversidade de São PauloSão CarlosBrazil

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