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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
Article

Abstract

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.

Keywords

Surfactant Electron Injection Emissive Layer Electron Transport Layer Modify Device 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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