Project IMAGE yields printable transparent and flexible electrodes for OLEDs and solar cells
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Funded by the German Federal Ministry of Education and Research and the Agence Nationale de la Recherche, the project involved Carnot MIB from Bordeaux (project leaded by LCPO) and Fraunhofer COMEDD from Dresden who jointly demonstrated new organic materials as printable transparent and flexible electrodes on flexible OLED and organic solar cells.
Flexible organic light-emitting diodes (OLED) with transparent electrodes
© Fraunhofer COMEDD
Such electrodes could replace conventional transparent metal oxides, such as indium tin oxide (ITO), which are less flexible and less cost effective. The PEDOT-based electrodes are PSS-free, have a transparency up to 85% at 550nm, a layer resistance of 90 ohms/sq and a conductivity of 200 Scm-1. They can be integrated on PET foils and PET foils with barrier films and can be structured by laser. The electrodes are OLED/OPV compatible and show an improved rolling capacity compared to ITO-based electrodes.
The consortium is now looking for industry partners for commercialization. The partners from MIB were responsible for the development of suitable chemical compositions and solutions for the production of transparent organic electrodes. Fraunhofer COMEDD developed the structuring procedures and integrated OLED and organic solar cells in the novel electrodes and developed encapsulation technologies. The companies Arkema and Tridonic provided advisory support to the project consortium during the project duration.
Visit Carnot MIB institute at www.instituts-carnot.eu
Visit Fraunhofer COMEDD at www.comedd.fraunhofer.de/en
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