Fabrication and characterization of OLEDs using PEDOT:PSS and MWCNT nanocomposites

Guang Feng Wang, Xiaoming Tao, Rong Xin Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

63 Citations (Scopus)

Abstract

Nanocomposites of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and multi-wall carbon nanotubes (MWCNTs) were investigated as hole injection layers in organic light-emitting diodes (OLEDs) consisting of a hole transport layer of N,N′-diphenyl-N,N′-di(m-tdyl)benzidine (TPD) and a light-emitting/electron transport layer of tris(8-hydroxyquinolinato)aluminium (Alq3) sandwiched between a transparent ITO anode based on polyethylene terephthalate (PET) substrate and a metal cathode. The OLEDs were fabricated by physical vapor deposition method and the current-voltage-luminescence (I-V-L) characteristics of the devices were examined. It was found that high light intensity can be obtained by adopting nanocomposites of PEDOT:PSS and MWCNTs as hole injection layer of OLEDs. Reasons for the improved performance of the devices were discussed. The improved electric properties of the nanocomposites might be the reason for the improvement of OLED performance achieved by incorporating MWCNTs into hole injection layer of PEDPT:PSS.
Original languageEnglish
Pages (from-to)2837-2841
Number of pages5
JournalComposites Science and Technology
Volume68
Issue number14
DOIs
Publication statusPublished - 1 Nov 2008

Keywords

  • A. Polymer-matrix composites (PMCs)
  • D. Scanning electron microscopy (SEM)
  • E. Physical vapor deposition
  • Nanocomposites

ASJC Scopus subject areas

  • Ceramics and Composites
  • Engineering(all)

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