Highly efficient and bright organic electroluminescent devices with an aluminum cathode

G. E. Jabbour, Y. Kawabe, S. E. Shaheen, J. F. Wang, M. M. Morrell, B. Kippelen, Nasser N Peyghambarian

Research output: Contribution to journal › Article

339 Citations (Scopus)

Abstract

The electron injection process, which limits the electroluminescent performance of organic devices, has been enhanced tremendously by inserting a layer of LiF with appropriate thickness between the cathode and a quinacridone doped organic layer. Devices with an Al/LiF cathode demonstrated a luminance in excess of 20 000 cd/m2 and an external quantum efficiency of 3%, which is comparable to devices with a Mg/LiF cathode. These devices show maximum luminance of 45 000 cd/m2 prior to failure in continuous bias operation. For the same LiF thickness, the operating voltage for devices with Al/LiF was lower than the corresponding operating voltage for devices with Mg/LiF or Mg alone. Tunneling theory is used to explain this enhancement.

Original languageEnglish (US)
Pages (from-to)1762-1764
Number of pages3
JournalApplied Physics Letters
Volume71
Issue number13
StatePublished - Sep 29 1997

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cathodes
aluminum
luminance
electric potential
quantum efficiency
injection
augmentation
electrons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Jabbour, G. E., Kawabe, Y., Shaheen, S. E., Wang, J. F., Morrell, M. M., Kippelen, B., & Peyghambarian, N. N. (1997). Highly efficient and bright organic electroluminescent devices with an aluminum cathode. Applied Physics Letters, 71(13), 1762-1764.

Highly efficient and bright organic electroluminescent devices with an aluminum cathode. / Jabbour, G. E.; Kawabe, Y.; Shaheen, S. E.; Wang, J. F.; Morrell, M. M.; Kippelen, B.; Peyghambarian, Nasser N.

In: Applied Physics Letters, Vol. 71, No. 13, 29.09.1997, p. 1762-1764.

Research output: Contribution to journal › Article

Jabbour, GE, Kawabe, Y, Shaheen, SE, Wang, JF, Morrell, MM, Kippelen, B & Peyghambarian, NN 1997, 'Highly efficient and bright organic electroluminescent devices with an aluminum cathode', Applied Physics Letters, vol. 71, no. 13, pp. 1762-1764.
Jabbour GE, Kawabe Y, Shaheen SE, Wang JF, Morrell MM, Kippelen B et al. Highly efficient and bright organic electroluminescent devices with an aluminum cathode. Applied Physics Letters. 1997 Sep 29;71(13):1762-1764.
Jabbour, G. E. ; Kawabe, Y. ; Shaheen, S. E. ; Wang, J. F. ; Morrell, M. M. ; Kippelen, B. ; Peyghambarian, Nasser N. / Highly efficient and bright organic electroluminescent devices with an aluminum cathode. In: Applied Physics Letters. 1997 ; Vol. 71, No. 13. pp. 1762-1764.
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