METHOD FOR MANUFACTURING METAL NANO PARTICLE FOR SOLAR CELL, INK COMPOSITION COMPRISING THE METAL NANO PARTICLE AND METHOD FOR MANUFACTURING THIN FILM SOLAR CELL USING THE SAME

摘要

The present invention relates to a method to manufacture a metal nanoparticle for a solar cell, an ink composition including the metal nanoparticle, and a method to manufacture a thin film using the same. More specifically, the said invention relates to a method to manufacture a metal nanoparticle forming a light absorbing layer of the solar cell comprising the steps of: preparing a first solution including a reducing agent; preparing a second solution including two or more kinds of salts selected in a group containing copper (Cu) base, zinc (Zn) base, and tin (Sn) base; producing a mixture by mixing the first solution and the second solution; and synthesizing and refining one or more kinds of metal nanoparticles by the reaction of the mixture, an ink composition including the metal nanoparticle, and a method to manufacture a thin film using the same.