New paper: Transparent and color-tunable organic light-emitting diodes with highly balanced emission to both sides

In this paper entitled ‘Transparent and color-tunable organic light-emitting diodes with highly balanced emission to both sides‘  we demonstrate transparent, two-color, stacked OLEDs that allow for balanced top- and bottom-emission. Making use of ultra thin, composite metal electrodes, this design avoids the use of ITO, such that this architecture can be transferred to flexible substrates. Careful optical design made it possible that the luminance of the device is virtually identical to both viewing directions, which is a great improvement over many earlier device layouts.

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