Fabrication method for dual-layer titanium dioxide photo anode of dye-sensitized solar cell

The invention provides a fabrication method for a dual-layer titanium dioxide photo anode of a dye-sensitized solar cell. The fabrication method for the dual-layer titanium dioxide photo anode of the dye-sensitized solar cell comprises the following steps of (a) growing an anatase titanium dioxide nanotube array on a conductive surface of an FTO substrate by a hydrothermal method; (b) scrapping a titanium dioxide thin film layer from the surface of the anatase titanium dioxide nanotube array, heating the anatase titanium dioxide nanotube array to be 450 DEG C for calcination for 30 minutes at a temperature rise rate of 2 DEG C min, and naturally cooling to a room temperature; (c) immersing the sample obtained in the step (b) in an N719 ruthenium dye, carrying out heat preservation for 12 hours on a condition of 50 DEG C for sensitization, washing the obtained product with absolute ethyl alcohol, and drying the obtained product for 2 hours at 80 DEG C. By the fabrication method for the dual-layer titanium