Achieving High Efficiency and Improved Stability in ITO-Free Transparent Organic Light-Emitting Diodes with Conductive Polymer Electrodes

Yong Hyun Kim*, Jonghee Lee, Simone Hofmann, Malte C. Gather, Lars Mueller-Meskamp, Karl Leo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

125 Citations (Scopus)

Abstract

Efficient transparent organic light-emitting diodes (OLEDs) with improved stability based on conductive, transparent poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) electrodes are reported. Based on optical simulations, the device structures are carefully optimized by tuning the thickness of doped transport layers and electrodes. As a result, the performance of PEDOT:PSS-based OLEDs reaches that of indium tin oxide (ITO)-based reference devices. The efficiency and the long-term stability of PEDOT:PSS-based OLEDs are significantly improved. The structure engineering demonstrated in this study greatly enhances the overall performances of ITO-free transparent OLEDs in terms of efficiency, lifetime, and transmittance. These results indicate that PEDOT:PSS-based OLEDs have a promising future for practical applications in low-cost and flexible device manufacturing.

Original languageEnglish
Pages (from-to)3763-3769
Number of pages7
JournalAdvanced Functional Materials
Volume23
Issue number30
DOIs
Publication statusPublished - 12 Aug 2013

Keywords

  • organic light-emitting diodes
  • transparent electrodes
  • transparent devices
  • DEVICES
  • ANODES
  • FILMS

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