PRECURSOR FOR PREPARING LIGHT-ABSORBING LAYER OF SOLAR CELL AND METHOD FOR MANUFACTURING SAME

摘要

The present invention relates to a precursor for preparing a light-absorbing layer of a solar cell and a method for manufacturing the same, the precursor being characterized by comprising: (a) an aggregate-phase composite including a first phase composed of a copper (Cu)-tin (Sn) bimetallic metal and a second phase composed of zinc (Zn)-containing chalcogenide, or including a first phase composed of a Cu-Sn bimetallic metal, a second phase composed of Zn-containing chalcogenide, and a third phase composed of Cu-containing chalcogenide; (b) a nanoparticle having a core-shell structure including a core composed of Cu-Sn bimetallic metal nanoparticles and a shell composed of Zn-containing chalcogenide or composed of Zn-containing chalcogenide and Cu-containing chalcogenide; or (c) a mixture thereof.