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Achieving High Efficiency and Improved Stability in ITO‐Free Transparent Organic Light‐Emitting Diodes with Conductive Polymer Electrodes
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- Authors
- Yong Hyun Kim, Jonghee Lee, Simone Hofmann, Malte C. Gather, Lars Mueller-Meskamp, Karl Leo
- Issue Date
- 2013-08
- Citation
- Advanced Functional Materials, v.23, no.30, pp.3763-3769
- ISSN
- 1616-301X
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- 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. Transparent organic light-emitting diodes (OLEDs) with conductive, transparent poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) electrodes are carefully optimized by tuning the device structure. The efficiency of PEDOT:PSS-based OLEDs is comparable to that of conventional indium tin oxide-based OLEDs. Long-term stability of OLEDs with PEDOT:PSS is significantly improved, showing a promising future for practical applications. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
- KSP Keywords
- 4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS), Co. KGaA, Device structure, Doped transport layers, Flexible device, ITO-free, Indium Tin Oxide(ITO), Low-cost, Optical simulation, Polymer electrodes, Structure engineering