Graphene-conducting polymer hybrid transparent electrodes for efficient organic optoelectronic devices

Byoung Hoon Lee, Jong Hoon Lee, Yung Ho Kahng, Nara Kim, Yong Jae Kim, Jongjin Lee, Takhee Lee, Kwanghee Lee

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

To achieve the broad utilization of the full functionality of graphene (GR) in devices, a transfer method should be developed that can simplify the process without leaving residue of the insulating supporting layer on the surface of GR. Furthermore, stable GR doping without the use of an insulating polymer is required. Here, a new GR transfer method that uses a popular conducting polymer, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), is reported as a new supporting layer for the transfer of GR films that are synthesized by chemical vapor deposition. The GR/PEDOT:PSS bilayer can be directly utilized without the removal process. Therefore, this transfer method simplifies the transfer process and solves the residue problem of conventional transfer methods. The stable doping of GR films is simultaneously achieved by using the PEDOT:PSS layer. The new GR/PEDOT:PSS hybrid electrodes are fully functional in polymer solar cells and polymer light-emitting diodes, outperforming the conventionally transferred GR electrodes and indium tin oxide electrodes. Graphene-conducting polymer hybrid electrode is demonstrated by employing a popular conducting polymer, poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS), as a new supporting and doping layer for the transfer of GR films. Because the transfer method simplifies the transfer process and solves the residue problem of conventional transfer methods, the new GR/PEDOT:PSS hybrid electrodes are fully functional in organic electronic devices, outperforming the conventionally transferred GR electrodes and indium tin oxide electrodes.

Original languageEnglish
Pages (from-to)1847-1856
Number of pages10
JournalAdvanced Functional Materials
Volume24
Issue number13
DOIs
StatePublished - 2 Apr 2014

Keywords

  • conducting polymers
  • graphene transfer
  • organic electronics
  • transparent electrodes

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