FABRICATION AND SURVEY OF CHARACTERISTICS OF FLEXIBLE TRANSPARENT CONDUCTIVE ELECTRODE BASED ON COPPER NANO WIRE

Abstract

In this study, we successfully fabricated transparent conductive electrodes based on copper nanowire using a doctor – blade coating on flexible polyethylene terephthalate substrates. The copper nanowires are synthesized via a simple hydrothermal method with diameters ranging from 25 to 50 nm, and wire lengths can be up to 150 µm. They have dispersed in isopropyl alcohol with a 20 mg/ml concentration, which has potential applications as conductive ink for transparent conductive electrodes. The electrical, optical, and flexibility properties of CuNW TCE are also investigated. CuNW TCE with the optimal number of printing cycles is 4 times. TCE obtained exhibits the sheet resistance, the transmittance at 550 nm, and the figure-of-merit (FOM) value of 40.68 Ω/, 87.3%, and 68.3 Ω^-1, respectively. In particular, the sheet resistance remained consistent after 750 bends at a bending angle of 80°. These results demonstrate the potential of CuNW TCE for flexible electrode applications in flexible optoelectronic devices.