Method for forming thin film of perovskite compound and method for manufacturing solar cell using same

A method of manufacturing a solar cell comprising:

• a process of forming a crystalline solar cell;
• a process of forming a buffer layer on the crystalline solar cell;
• a process of forming a perovskite solar cell on the buffer layer;
• and
• a process of forming a first electrode on the perovskite solar cell and a second electrode on the crystalline solar cell,
• wherein the process of forming the perovskite solar cell comprises a process of forming a thin film of a perovskite compound, and
• wherein the process of forming the thin film of the perovskite compound comprises:
• a process of depositing a perovskite compound by reacting at least one compound selected from amine-based compounds and amidine-based compounds, organic metal compounds containing a divalent positive ion, and at least one hydrogen halide;
• and
• a process of removing impurities in the deposited perovskite compound.