PURPOSE: A preparation method of a hybrid silver(Ag)/titanium oxide(TiO_2) nanoparticle array and the hybrid Ag/TiO_2 nanoparticle array which is manufactured using the same are provided to obtain excellent photocatalytic activity by containing silver and titanium oxide which are sensitive to light and to be used for an eco-friendly device, a photoelectric cell, and a photoelectric sensor. CONSTITUTION: A preparation method of a hybrid silver(Ag)/titanium oxide(TiO_2) nanoparticle array having improved photocatalytic activity comprises: a first step of manufacturing a reversed micelle solution by dissolving an amphiphilic diblock copolymers in a solvent; a second step of manufacturing a colloidal solution by dissolving a silver nanoparticle precursor in a solvent; a third step of manufacturing a titanium oxide sol-gel precursor solution; and a fourth step of manufacturing a silver/titanium oxide/diblock copolymer thin film by mixing the reversed micelle solution, the colloidal solution, and the sol-gel precursor solution and spin coating the mixture on a substrate; and a fifth step of removing the diblock copolymers through post-treatment of the thin film.
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