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The task of this work was to build large-scale organic light-emitting diodes (OLEDs) for luminaires. This required an invisible series connection of OLEDs to reduce the device current and hence to mitigate ohmic losses. A femtosecond laser was used to selectively structure the layers.
By verifying with Sensofar using the confocal technique with a 20X brightfield objective that the RF antenna’s shape was as desired and possessed an adequate silver layer, good conductivity was ensured.