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

95 Citations (Scopus)


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
Issue number1-3
Publication statusPublished - 2003 Jan

Bibliographical note

Funding Information:
J.-Y. Kim and M. Kim wish to acknowledge the support of BK21 fellowships. J.-H. Choi thanks the KOSEF Basic Research Program, KBSI, MOE and the instruments from the equipment facility of CRM at Korea University. This work was supported by Korea Research Foundation Grant (KRF-2000-015-DP0188).


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

ASJC Scopus subject areas

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


Dive into the research topics of 'Electrical and optical studies of organic light emitting devices using SWCNTs-polymer nanocomposites'. Together they form a unique fingerprint.

Cite this