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|Title:||Up-scalable ITO-free organic light emitting diodes based on embedded inkjet-printed copper grids||Authors:||Pozov, Sergey M.
Choulis, Stelios A.
List-Kratochvil, Emil J. W.
|Keywords:||Organic light emitting diodes (OLEDs);Indium tin oxide (ITO);Organic optoelectronic devices||Category:||Mechanical Engineering||Field:||Engineering and Technology||Issue Date:||Jun-2019||Source:||Flexible and Printed Electronics, 2019, Volume 4, Number 2||Abstract:||We report on ITO-free OLEDS with a transparent hybrid Cu nanoparticle grid/PEDOT:PSS electrode processed in ambient conditions. An experimentally based methodology was implemented, where studies on alternative PEDOT:PSS derivatives and Cu grid design were performed, to gradually increase the efficiency of lab scale ITO-free OLEDs. To further increase electrode performance, inkjet-printed (IJP) Cu-grids are embedded to flatten the electrode, reduce leakage current and enhance homogeneity and efficiency. Finally, embedded Cu based ITO-free OLEDs showed current and power efficiencies comparable to reference ITO-based OLEDs. Methods to manufacture large area flat embedded IJP Cu-electrodes on glass and flexible substrates are presented and upscaling prospects of the proposed ITO-free electrode are discussed.||URI:||https://ktisis.cut.ac.cy/handle/10488/14356||ISSN:||2058-8585||DOI:||10.1088/2058-8585/ab17a5||Rights:||© 2019 IOP Publishing Ltd||Type:||Article|
|Appears in Collections:||Άρθρα/Articles|
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