Electrical and emitting properties of organic electroluminescent diodes with nanostructured cathode buffer-layers of Al/Alq3 ultrathin films

Kazunari Shinbo, Eigo Sakai, Futao Kaneko, Keizo Kato, Takahiro Kawakami, Toyoyasu Tadokoro, Shinichi Ohta, Rigoberto C. Advincula

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Organic light emitting diodes (OLEDs) containing nanostructured cathode buffer layers were fabricated, and their electrical and emitting properties were investigated. The OLEDs have an ITO anode/CuPc/TPD/Alq3/buffer layer/Al cathode structure with the buffer layers made from nanostructured alternating layers Alq3 and Al. The driving voltage and the efficiency of the devices were improved by insertion of the buffer layer. It was estimated that some modulations of the Schottky barrier at the Alq3 and the Al cathode interface were induced due to the insertion of the buffer layer and it caused an enhancement of electron injection from the Al cathode.

Original languageEnglish
Pages (from-to)1233-1238
Number of pages6
JournalIEICE Transactions on Electronics
VolumeE85-C
Issue number6
Publication statusPublished - 2002
Externally publishedYes

Keywords

  • Alq3
  • Buffer layer
  • Organic light emitting diode (OLED)
  • Schottky barrier
  • TPD

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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  • Cite this

    Shinbo, K., Sakai, E., Kaneko, F., Kato, K., Kawakami, T., Tadokoro, T., Ohta, S., & Advincula, R. C. (2002). Electrical and emitting properties of organic electroluminescent diodes with nanostructured cathode buffer-layers of Al/Alq3 ultrathin films. IEICE Transactions on Electronics, E85-C(6), 1233-1238.