Abstract: A wet ball mill method for fabricating copper/indium/gallium/selenium (CIGS) nanoparticles, comprising an individual milling process, a homogeneously mixing process, a primary milling process, and an advanced milling process, wherein in the individual milling process, the individual particles or compound particles including copper, indium, gallium and/or selenium are milled to the individual milled materials with a particle size 500 nm to 600 nm; in the homogeneously mixing process, the individual milled materials are mixed to a mixed homogenate; in the primary milling process, the mixed homogenate is milled to the primary milled materials with particle size 100 nm to 200 nm; and in the advanced milling process, the primary milled materials are milled to the advanced milled materials with particle size less than 50 nm which are the CIGS nanoparticles for fabricating the absorption layer of CIGS solar cell.

Abstract: A wet ball mill method for fabricating copper/indium/gallium/selenium (CIGS) nanoparticles, comprising an individual milling process, a homogeneously mixing process, a primary milling process, and an advanced milling process, wherein in the individual milling process, the individual particles or compound particles including copper, indium, gallium and/or selenium are milled to the individual milled materials with a particle size 500 nm to 600 nm; in the homogeneously mixing process, the individual milled materials are mixed to a mixed homogenate; in the primary milling process, the mixed homogenate is milled to the primary milled materials with particle size 100 nm to 200 nm; and in the advanced milling process, the primary milled materials are milled to the advanced milled materials with particle size less than 50 nm which are the CIGS nanoparticles for fabricating the absorption layer of CIGS solar cell.