Poly(3, 4-ethylenedioxythiophene) derived from poly(ionic liquid) for the use as holeInjecting material in organic light-emitting diodes

Taeyoung Kim, Minwon Suh, Soon Jae Kwon, Tae Hee Lee, Jong Eun Kim, You Jong Lee, Joo Hyung Kim, Prof Munpyo Hong, Kwang Suck Suh

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

We report that poly(3, 4-ethylenedioxythiophene) derived from poly(ionic liquid) (PEDOT:PIL) constitutes a unique polymeric hole-injecting material capable of improving device lifetime in organic light-emitting diodes (OLEDs). Imidazolium-based poly(ionic liquid)s were engineered to impart non-acidic and non-aqueous properties to PEDOT without compromising any other properties of PEDOT. A fluorescent OLED was fabricated using PEDOT:PIL as a hole-injection layer and subjected to a performance evaluation test. In comparison with a control device using a conventional PEDOTbased material, the device with PEDOT:PIL was found to achieve a significant improvement in terms of device lifetime. This improvement was attributed to a lower indium content in the PEDOT:PIL layer, which can be also interpreted as the effective protection characteristics of PEDOT:PIL for indium extraction from the electrodes.

Original languageEnglish
Pages (from-to)1477-1482
Number of pages6
JournalMacromolecular Rapid Communications
Volume30
Issue number17
DOIs
Publication statusPublished - 2009 Sep 1

Fingerprint

Ionic Liquids
Indium
Organic light emitting diodes (OLED)
Ionic liquids
Electrodes
poly(3,4-ethylene dioxythiophene)

Keywords

  • Hole-injection layer
  • Long-term stability
  • Organic light emitting diodes
  • Pedot
  • Poly(ionic liquid)

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Poly(3, 4-ethylenedioxythiophene) derived from poly(ionic liquid) for the use as holeInjecting material in organic light-emitting diodes. / Kim, Taeyoung; Suh, Minwon; Kwon, Soon Jae; Lee, Tae Hee; Kim, Jong Eun; Lee, You Jong; Kim, Joo Hyung; Hong, Prof Munpyo; Suh, Kwang Suck.

In: Macromolecular Rapid Communications, Vol. 30, No. 17, 01.09.2009, p. 1477-1482.

Research output: Contribution to journalArticle

Kim, Taeyoung ; Suh, Minwon ; Kwon, Soon Jae ; Lee, Tae Hee ; Kim, Jong Eun ; Lee, You Jong ; Kim, Joo Hyung ; Hong, Prof Munpyo ; Suh, Kwang Suck. / Poly(3, 4-ethylenedioxythiophene) derived from poly(ionic liquid) for the use as holeInjecting material in organic light-emitting diodes. In: Macromolecular Rapid Communications. 2009 ; Vol. 30, No. 17. pp. 1477-1482.
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