FABRICATION METHOD OF PHOTO ACTIVE LAYER FOR SOLAR CELL

摘要

PURPOSE: A manufacturing method of a solar battery is provided to manufacture a photoactive layer based on a single phase semiconductor compound, which has dense and coarse grains, through a low temperature heat treatment of 550 °C or less. CONSTITUTION: An ink comprises a copper nanoparticle and a chalcogen compound particle of one or more elements selected from group 12-14. A manufacturing method of a solar cell photoactive layer comprises a step of forming a coating film by spreading ink which contains the copper nanoparticle and the chalcogen compound particle; and a step of manufacturing a copper and chalcogen compound layer by heat-treating the coating layer. The group 12 includes Zn, the group 13 is one or more selected from indium and gallium, the group 14 includes Sn, and the chalcogen element is one or more selected from sulfur and selenium.