Patent ID: 8864871
Filing Date: 2014-10-21
Classification: B22F,B82Y,C30B,Y10S

Abstract:
1. A method for manufacturing copper metal nanoparticles with 50-70 nm size for conductive ink for wiring pattern formation, using microwaves, the method comprising: preparing a mixture solution comprising a copper salt, a dispersing agent that is used in a mole ratio of 1 to 20 with respect to 1 mole of the copper salt, a reducing agent that is used in a mole ratio of 2 to 6 with respect to 1 mole of the copper salt, and an organic solvent, raising temperature of the mixture solution up to 30-50° C. and agitating; irradiating, after raising the temperature of the mixture solution up to 30-50° C. and agitating, the mixture solution with microwaves, wherein the strength of irradiating is 0.01 to 0.5 W/cm obtaining the copper metal nanoparticles by lowering a temperature of the mixture solution, the obtained copper metal nanoparticles having a particle size of 50-70 nm.