Solution-processed fabric-based Ag electrodes for wearable top-emitting organic light-emitting devices

Flexible fabric-based top-emitting organic light-emitting devices (Fa-TEOLEDs) have garnered significant attention due to their tremendous potential in wearable electronics. However, fabricating cost-effective high- quality metal reflection electrodes on fabric still poses a formidable challenge. Herein, flexible fabric-based Ag reflection electrodes, which possess a sheet resistance of similar to 0.15 Omega/sq and a reflectance of similar to 94.7 %, along with excellent environmental and mechanical stability, were fabricated through the innovative combination of fast silver mirror reaction and template-stripping processes. Adopting the fabric-based Ag electrodes, ultra-flexible red, green and blue Fa-TEOLEDs with ultrathin emitting layers present the remarkable current efficiencies of 39.4 cd/A, 119.0 cd/A and 44.8 cd/A, respectively. Impressively, the Fa-TEOLEDs show excellent mechanical flexibility and durability, retaining similar to 88.1 % of the original luminance after 700 bending cycles at a bending radius of 2 mm. This substantial advancement marks a crucial stride forward in the design of high-quality metal reflection electrodes and the advancement of Fa-TEOLEDs for wearable electronics.