CuO NANOPARTICLES, INK THEREOF, AND METHOD FOR PREPARING CU THIN FILM BY REDUCING CuO THIN FILM THROUGH MICROWAVE IRRADIATION

摘要

The present invention relates to the synthesis of copper oxide (CuO) nanoparticles having a particle size of 2-20 nm. The present invention relates to a method for preparing ink by using the CuO nanoparticles and a mixture solvent comprising water, ethanol and ethylene glycol. The ethylene glycol serves as a reducing agent. In addition, in the present invention a thin film is prepared on a substrate by using a mixed CuO nanoparticle ink and a pure copper thin film is formed by irradiating microwaves at different time intervals. When microwaves are irradiated at a CuO ink thin film, prepared by spin coating, for three minutes or more, the film has a resistance of 4.65μΩ·cm, which is 2-3 times greater than that of a bulk. In the present invention the ink was applied to a gel pen so as to be printed on various substrates. An electrode, which is printed on a paper substrate with the ink pen, was continuously printed three times and microwave-irradiated and has a resistance of 10μΩ, which is six times greater than that of a bulk.