NOVELTY - The method involves forming a colloidal crystal layer on a conductive transparent basic material. The porous transition metal oxide layer is formed. A porous transition metal oxide layer is coated on another porous transition metal oxide layer using transition metal oxide precursor-contain solution. The colloidal crystal layer is selectively removed from the conductive transparent basic material. Photosensitive dye in the porous transition metal oxide layers is absorbed. Diameter of transition metal oxide particle is 100 nano meter-5 micro meter.    USE - Method for manufacturing a photo electrode of a dye-sensitized solar cell (claimed).    ADVANTAGE - The method enables improving optical absorption efficiency of a photo electrode and productivity and stability of a dye-sensitized solar cell. The method enables controlling thickness of the colloidal crystal layer in an effective manner. The method enables absorbing the photosensitive dye from a wide specific surface area of the porous transition metal oxide layer so as to manufacture the photo electrode through a chemical solution growth process in an easy manner.    DETAILED DESCRIPTION - The transition metal oxide layers are made of a metal oxide material that is selected from one among titanium, zirconium, strontium, zinc, indium, yttrium, lanthanum, vanadium, molybdenum, tungsten, tin, niobium, magnesium, aluminum, scandium, gallium or samarium material. The transition metal oxide precursor-contain solution is provided with transition metal oxide particle that is selected from one among gold, platinum or silver material. The colloidal crystal layer is formed with colloidal particle that is selected from one among polystyrene, polymethylmethacrylate, polystyrene/polydivinylbenzene, polyamide or poly butyl methacrylate-divinylbenzene material. INDEPENDENT CLAIMS are also included for the following:    (1) a photoelectrode for a dye-sensitized solar cell    (2) a dye-sensitized solar cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating a method for manufacturing a photo electrode.'(Drawing includes non-English language text)'