METHOD FOR MANUFACTURING CI(G)S-BASED THIN FILM COMPRISING CU-SE THIN FILM USING CU-SE TWO-COMPONENT NANOPARTICLE FLUX, AND CI(G)S-BASED THIN FILM MANUFACTURED BY THE METHOD

A method for manufacturing a CI(G)S-based thin film using a Cu-Se two-component nanoparticle flux, and a CI(G)S-based thin film manufactured by the method are provided. The method for manufacturing the CI(G)S-based thin film, according to the present invention, comprises the steps of: manufacturing Cu-Se two-component nanoparticles and In nanoparticles; manufacturing a slurry comprising the Cu-Se two-component nanoparticles by mixing the Cu-Se two-component nanoparticles, a solvent, and a binder, and manufacturing a slurry comprising the In nanoparticles by mixing the In nanoparticles, the solvent, and the binder; forming a thin film in which a plurality of layers are laminated by alternately coating the slurry comprising the Cu-Se two-component nanoparticles and the slurry comprising the In nanoparticles on a substrate, regardless of order; and heat-processing the thin film which is formed. As a result, adequate particle growth is achieved by the Cu-Se two-component nanoparticles functioning as the flux by means of the heat-processing, thereby forming a thin film having a dense structure by filling crevices, and ultimately increasing energy conversion efficiency of a solar cell comprising the thin film.