The present invention relates to a method for manufacturing a poly(3-hexylthiophene) (P3HT) thin film, which simultaneously induces self-assembly and thin film formation of a conductive polymer P3HT. The method for manufacturing a conductive polymer thin film comprises the steps of: (i) dissolving a conductive polymer in a first solvent to produce a conductive polymer solution; (ii) dropping the conductive polymer solution produced in step (i) on a second solvent; and (iii) evaporating the first solvent to form a conductive polymer thin film. In step (iii), the conductive polymer is induced to be self-assembled and form a thin film at the same time while the first solvent is evaporated. According to the present invention, a process is simplified, a morphology at a nano-level can be controlled, and uniformity of a thin film increases.;COPYRIGHT KIPO 2017
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