Electrical and optical studies of organic light emitting devices using SWCNTs-polymer nanocomposites

Jae Yoo Kim, Moonhee Kim, Heon Mo Kim, J. Joo, Jong Ho Choi

Research output: Contribution to journalArticlepeer-review

84 Citations (Scopus)

Abstract

The novel organic light emitting diodes with the structure of [ITO-coated glass/PEDOT:PSS/SWCNTs-PVK (polyvinylcarbazole) nanocomposites/(4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran (DCM)-doped) Alq3/Li:Al] were fabricated and characterized. Single-walled carbon nanotubes (SWCNTs) were synthesized by the laser ablation method and dispersed with the hole conducting polymer PVK in toluene. SWCNTs-PVK nanocomposite was spin-coated on the PEDOT:PSS/ITO-coated glass and then DCM-doped Alq3 was deposited by the cluster beam deposition methods. Studies of photoluminescence, electroluminescence (EL) and device characteristics demonstrate that whereas the EL of the devices with SWCNTs shows the same characteristic emission compared to those without SWCNTs, the device qualities such as external quantum efficiency were improved by a factor of 2-3 for SWCNTs concentrations up to 0.2 wt%.

Original languageEnglish
Pages (from-to)147-151
Number of pages5
JournalOptical Materials
Volume21
Issue number1-3
DOIs
Publication statusPublished - 2003 Jan

Keywords

  • Electroluminescence
  • External quantum efficiency
  • Organic light emitting diodes
  • Photoluminescence
  • Single-walled carbon nanotubes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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