Flexible plasma‐sintered transparent conducting electrodes fabricated from particle free gold inks
Michael Hengge, Felix Hermerschmidt, Nicolas Fratzscher, Konstantin Livanov, Natalia Zamoshchik, Emil J. W. List‐KratochvilAbstract
Organic and perovskite‐based light‐emitting diodes and solar cells require alternative materials to replace indium tin oxide (ITO), which is expensive and mechanically brittle, as the standard conductive transparent electrode. Many alternatives have been proposed, yet many of those contain silver that however tends to react with certain active device materials and is susceptible to oxidation. A potential solution lies in utilizing thin gold electrodes. In this letter, we present electrodes manufactured using a particle‐free metal‐organic decomposition ink. The ink is sintered using a low‐temperature plasma process, which is suitable for temperature‐sensitive materials. The resulting sintered electrodes exhibit a good combination of transparency and conductivity. As a proof‐of‐concept, inverted ITO‐free organic light emitting diodes were successfully produced on flexible PET as well as rigid glass substrates.