METHOD FOR FABRICATING QUANTUM DOT FILM AND METHOD FOR FABRICATING SOLAR CELL

摘要

The purpose of the present invention is to provide a method of manufacturing a quantum dot thin film, which can improve conductivity of a quantum dot thin film and facilitate adjustment of band energy. The method of the present invention comprises the steps of: removing a first ligand from a quantum dot by mixing a first solution including a III-V group compound and a non-polar solvent and the quantum dot combined with the first ligand including an alkyl chain with a second solution including a fluorine-containing compound and a polar solvent; separating the first ligand-removed quantum dot which has been moved to a polar solvent layer of a mixed solution of the first solution and the second solution from a phase-separated non-polar solvent layer; forming a preliminary thin film by coating a quantum dot ink including the first ligand-removed quantum dot on a substrate; and providing a ligand-forming material to the preliminary thin film, thereby bonding a second ligand to the surface of the quantum dot.