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https://hdl.handle.net/20.500.14279/10088
Title: | Inkjet-printed embedded Ag-PEDOT:PSS electrodes with improved light out coupling effects for highly efficient ITO-free blue polymer light emitting diodes | Authors: | Kinner, Lukas Nau, Sebastian Popovic, Karl Sax, Stefan Burgués-Ceballos, Ignasi Hermerschmidt, Felix Lange, Alexander Boeffel, Christine Choulis, Stelios A. List-Kratochvil, E.J.W. |
Major Field of Science: | Engineering and Technology | Field Category: | Mechanical Engineering | Keywords: | Anodes;Electrodes;Light emitting diodes;Plastic coatings;Tin oxides | Issue Date: | 6-Mar-2017 | Source: | Applied Physics Letters, 2017, vol. 110, no. 10 | Volume: | 110 | Issue: | 10 | Journal: | Applied Physics Letters | Abstract: | We report on solution processed polymer light emitting diodes (PLEDs) using inkjet-printed embedded and non-embedded metal grid anodes. Metal grids were inkjet-printed in a honeycomb layout. Honeycomb dimensions were varied from 3 mm to 8 mm to optimize device performance. Inkjet-printed grids were then coated with a highly conductive PEDOT:PSS formulation. First experiments on PEDOT:PSS coated, non-embedded metal grid anodes showed that grids with a 3 mm honeycomb diameter have a similar efficiency as optimized indium tin oxide (ITO) based reference devices. To further improve the efficiency of the devices, the honeycomb Ag-grids were embedded in an Ormocer®-based material. A detailed performance analysis of PLEDs fabricated on ITO, non-embedded and embedded grids was carried out. It is shown that reduced leakage current and enhanced light outcoupling by embedding result in a significant efficiency enhancement of 250% in inkjet-printed embedded Ag-PEDOT:PSS ITO-free PLEDs, compared to the ITO-based reference PLEDs. | URI: | https://hdl.handle.net/20.500.14279/10088 | ISSN: | 10773118 | DOI: | 10.1063/1.4978429 | Rights: | © The Author(s) | Type: | Article | Affiliation : | NanoTecCenter Weiz Forschungsgesellschaft mbH Cyprus University of Technology Fraunhofer-Institut fur Angewandte Polymerforschung - IAP Humboldt-Universitat zu Berlin |
Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Hermerschmidt, Choulis, Burgués-Ceballos.pdf | 1.25 MB | Adobe PDF | View/Open |
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