Electroluminescence lifetime and efficiency of polymer LEDs with surface-treated anodes

J. S. Kim, F. Cacialli, R. H. Friend, Rusli Daik, W. J. Feast

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We studied the influence of wet (aquaregia, ultrasonication, RCA) and dry (oxygen- and argon-plasmas) treatments of ITO anodes on single- and double-layer LEDs based on PPV or PDPV, in terms of the electroluminescence (EL) lifetimes, efficiencies (Cd/A and lm/W), luminances and driving voltages. Oxygen plasma treatment yields the highest efficiencies, luminances, and the lowest driving voltages. We measured the lifetimes (time to half luminance at constant V) of ITO/PPV/Ca devices, all driven with an initial current density of approx. 10 mA/cm2. Oxygen plasma treatment increases significantly the EL lifetime by an order of magnitude with respect to the untreated ITO, and removes the occasional occurrence of low-voltage current anomalies.

Original languageEnglish
Pages (from-to)1065-1066
Number of pages2
JournalSynthetic Metals
Volume102
Issue number1-3
DOIs
Publication statusPublished - Jun 1999
Externally publishedYes

Fingerprint

oxygen plasma
Electroluminescence
luminance
ITO (semiconductors)
electroluminescence
Light emitting diodes
Luminance
Anodes
Polymers
anodes
light emitting diodes
Oxygen
Plasmas
life (durability)
low voltage
polymers
Electric potential
Argon
argon plasma
Current density

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Electroluminescence lifetime and efficiency of polymer LEDs with surface-treated anodes. / Kim, J. S.; Cacialli, F.; Friend, R. H.; Daik, Rusli; Feast, W. J.

In: Synthetic Metals, Vol. 102, No. 1-3, 06.1999, p. 1065-1066.

Research output: Contribution to journalArticle

Kim, J. S. ; Cacialli, F. ; Friend, R. H. ; Daik, Rusli ; Feast, W. J. / Electroluminescence lifetime and efficiency of polymer LEDs with surface-treated anodes. In: Synthetic Metals. 1999 ; Vol. 102, No. 1-3. pp. 1065-1066.
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