| abstract |
The present invention relates to a silver nanoparticle, a method for producing a silver nanocolloid, and a silver ink composition including the silver nanoparticle.n n n The method for preparing silver nanoparticles according to the present invention comprises a) a silver compound and a silver having a special structure by reacting with a mixture of one or two or more selected from ammonium carbamate compounds, ammonium carbonate compounds or ammonium bicarbonate compounds. Step b) to produce a complex compound, characterized in that it comprises the step of preparing a silver nanoparticles by reacting a reducing agent to the silver complex compound, by applying heat to reduce or pyrolyze, according to the present invention The method is characterized in that in the step b) is prepared by further adding a solvent and a colloidal stabilizer to the silver complex compound.n n n The manufacturing method according to the present invention can not only prepare various types of silver nanoparticles or silver nanocolloids by a simple manufacturing process, but also improve the selectivity of silver nanoparticle size, and also short time at a low temperature of 150 ° C. or less. It is possible to provide a ink composition capable of baking even during the firing, and to form a coating film or a fine pattern showing high conductivity while being easy to adjust the coating film thickness, and to provide a silver ink composition applicable to a reflective film material, an electromagnetic wave shielding agent, an antimicrobial agent, and the like. Can be. |