Surface plasmon-enhanced electroluminescence in organic light-emitting diodes incorporating Au nanoparticles

  • Y. Xiao
  • , J. P. Yang
  • , P. P. Cheng
  • , J. J. Zhu
  • , Z. Q. Xu
  • , Y. H. Deng
  • , S. T. Lee
  • , Y. Q. Li*
  • , J. X. Tang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

168 Scopus citations

Abstract

Surface plasmon-enhanced electroluminescence (EL) in an organic light-emitting diode is demonstrated by incorporating the synthesized Au nanoparticles (NPs) in the hole injection layer of poly(3,4-ethylene dioxythiophene):polystyrene sulfonic acid. An increase of ∼25% in the EL intensity and efficiency are achieved for devices with Au NPs, whereas the spectral and electrical properties remain almost identical to the control device. Time-resolved photoluminescence spectroscopy reveals that the EL enhancement is ascribed to the increase in spontaneous emission rate due to the plasmonic near-field effect induced by Au NPs.

Original languageEnglish
Article number013308
JournalApplied Physics Letters
Volume100
Issue number1
DOIs
StatePublished - 2 Jan 2012
Externally publishedYes

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