| abstract |
A method for fabricating a perovskite photoactive layer thin film according to the present invention comprises a coating step of coating one side of a substrate with a precursor solution containing the compound represented by chemical formula 1 or chemical formula 2, below, to form a precursor solution coating layer; a first thermal treatment step of contacting the precursor solution coating layer with a first heat source to conduct thermal treatment; and a second thermal treatment step of applying a second heat source formed of predetermined heated air to the precursor solution coating layer to conduct thermal treatment with hot wind. [chemical formula 1] AMX3 and [chemical formula 2] 2MX4 wherein A includes at least one monovalent cation selected from the group consisting of an amine-substituted, straight or branched alkyl of C1-20 or an alkaline metal ion, M includes at least one divalent metal cation selected from the group consisting of Pb2+, Sn2+, Ge2+, Cu2+, Ni2+, Co2+, and Fe2+, and X is a halogen anion. |