Color-stable, ITO-free white organic light-emitting diodes with enhanced efficiency using solution-processed transparent electrodes and optical outcoupling layers
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In this work, we demonstrate color-stable, ITO-free white organic light-emitting diodes (WOLEDs) with enhanced efficiencies by combining the high-conductivity conducting polymer PEDOT:PSS as transparent electrode and a nanoparticle-based scattering layer (NPSL) as the effective optical out-coupling layer. In addition to efficiency enhancement, the NPSL is also beneficial to the stabilization of electroluminescent spectra/colors over viewing angles. Both the PEDOT:PSS and the NPSL can be fabricated by simple, low-temperature solution processing. The integration of both solution-processable transparent electrodes and light extraction structures into OLEDs is particularly attractive for applications since they simultaneously provide manufacturing, cost and efficiency advantages.
Chang , H-W , Kim , Y H , Lee , J , Hofmann , S , Luessem , B , Mueller-Meskamp , L , Gather , M C , Leo , K & Wu , C-C 2014 , ' Color-stable, ITO-free white organic light-emitting diodes with enhanced efficiency using solution-processed transparent electrodes and optical outcoupling layers ' Organic Electronics , vol 15 , no. 5 , pp. 1028-1034 . DOI: 10.1016/j.orgel.2014.02.017
© 2014. Elsevier Inc. All rights reserved. This is the author’s version of a work that was accepted for publication in Organic Electronics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Organic Electronics, 15, 5, May 2014 DOI http://dx.doi.org/10.1016/j.orgel.2014.02.017
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