Journal
ORGANIC ELECTRONICS
Volume 19, Issue -, Pages 147-156Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2015.01.017
Keywords
Polymer light emitting diodes; Polymeric anodes; Inkjet printing process; Flexible displays
Funding
- Display Center of Samsung Display
- Seoul National University
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High efficient flexible polymer light-emitting devices which composed with highly conductive and transparent foldable polymer electrodes were fabricated. New doping materials, n-methyl-2-pyrrolidone (NMP) and n-methylformamide (NMF), have much improved the conductivity of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS). The selectively modulated inkjet-printing method facilitated the PEDOT: PSS's application to both transparent anodes and highly conductive bus line electrodes. Multiple-time printed PEDOT: PSS electrodes showed a similar performance to Ag bus lines while one-time printed anode showed a much better figure of merit than that of ITO on plastic. Due to the flexible property, high transparency and high work function of the polymeric anode, ITO-free PLEDs showed a high performance with foldable characteristics. (C) 2015 Elsevier B.V. All rights reserved.
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