▎ 摘　　要

NOVELTY - Preparation of material involves placing (a) at least one copper nanowire layer on a substrate, placing (b) at least one graphene oxide layer in contact with the copper nanowire layer, simultaneously chemically-reducing (c) graphene oxide (GO) and copper nanowires (CuNWs) to form a coating layer comprising copper nanowires and reduced graphene oxide onto the substrate, and providing a material comprising the substrate and the coating layer. USE - Preparation of material used as transparent electrode (all claimed) in electronic devices. Uses include but are not limited to touchscreen, flat display, solar cell, and organic LED. ADVANTAGE - The method is simple and economical, efficiently provides highly stable transparent electrodes suitable for flexible electronics, and eliminates the need for additional treatments. The amount of material (i.e. copper nanowires and graphene oxide flakes) deposited onto the substrate, can be tuned easily by airbrush technique to have a fine control over the transmittance and conductivity of the electrode. The simultaneous reduction of graphene oxide and copper nanowires increases the stability and the conductivity of copper nanowire network films. The method can be carried out under mild conditions at room temperature, avoids the use of harmful solvents and reagents, and does not involve annealing the material, especially the copper nanowire/reduced graphene oxide layer. The copper nanowires are perfectly intact and has no detectable corrosion after reduction. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for material, which comprises the substrate comprising a material having a glass transition temperature of lower than 180 degrees C, and the coating layer. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view explaining the process for preparing electrode. Provision of copper nanowire layer on substrate (a) Provision of graphene oxide layer in contact with copper nanowire layer (b) Chemical-reduction of graphene oxide and copper nanowires (c) Copper nanowires (CuNWs) Graphene oxide (GO)