Method of manufacturing a thin film of perovskite compound and method of manufacturing a solar cell using the same

A method of manufacturing a thin film of a perovskite compound, the method comprising:

• reacting (i) at least one compound selected from among an amine-based compound and an amidine-based compound, (ii) an organic metal compound including a divalent positive ion, (iii) at least one hydrogen halide and (iv) at least one alkali metal-based compound through a chemical vapor deposition (CVD) process by supplying the at least one compound, the organic metal compound, the at least one hydrogen halide and the at least one alkali metal-based compound in a chamber,
• wherein the at least one compound selected from among an amine-based compound and an amidine-based compound is selected from the group consisting of methylamine, ethylamine, phenethylamine, and formamidine,
• wherein the organic metal compound including the divalent positive ion is selected from the group consisting of Pb(CH3)4, Pb(C2H5)4, Pb(SCN)2, (C2H5)3PbOCH2C(CH3)3, Pb(C11H19O2)2, Pb((CH3)3C—COCHCO—C(CH3)3)2, Pb((C6H5)2PCH2P(C6H5)2)2, Pb(N(CH3)2C(CH3)2OH)2, C12H28 N2O2Pb, and a compound represented by the following Chemical Scheme 1:
• (In the Chemical Scheme 1, each of R1 to R12 is independently composed of hydrogen or an alkyl group, and the X is selected from a group consisting of Pb, Sn, Ge, Sb, Bi, and Ba),
• wherein the perovskite compound comprises a compound of CABX3, where the Cis composed of the at least one alkali metal, the A is composed of a monovalent organic positive ion of the amine-based compound or a monovalent organic positive ion of the amidine-based compound, the B is composed of the divalent positive ion, and the X is composed of at least one halogen compound.