Surfactants auxiliary high-energy ball-mill method for preparing nano cuprum indium selenium solar cell material

The present invention is surfactant aided high energy ball milling process for preparing nanometer Cu-In-Se (CIS) material for solar cell. The high energy ball milling process includes preparation of micron level CIS phase with three kinds simple substance material, Cu, In and Se; and the preparation of nanometer CIS material while adding pyridine surfactant. Thus prepared nanometer CIS material for solar cell has stable structure, single composition and homogeneous granularity.