Researchers use MVDL technology to deposit high-performance, flexible and transparent metal mesh OLED electrodes

Researchers from Seoul National University have developed high-performance flexible transparent electrodes, using selective metal deposition. They have successfully implemented these electrodes in a top-emitting OLED device, to demonstrate the effectiveness.

To create these electrodes, the researchers developed a novel metal patterning technology, based on a metal vapor desorption layer (MVDL). MVDL can enable high-resolution metal mesh patterns, down to only a few micrometers (μm), without the need for chemical cleaning or lift-off processes. This helps minimize the damage to the underlying organic layers.

Specifically, the researchers first deposited solution-processed poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF–HFP) using a transfer printing method. Then, on top of the PVDF-HFP layer, they deposited deposited silver to create the conductive Ag-mesh.