NOVELTY - The method comprises forming a titanium dioxide patterned layer comprising nanotubes and/or nanowires on a conductive substrate electrode (230), forming quantum dots (235) on the patterned layer, forming a counter electrode (210), assembling the substrate electrode having titanium dioxide layer comprising nanotubes and/or nanowires and quantum dots and the counter electrode into a sandwich with a gasket (220) disposed between a surface of the substrate electrode and the counter electrode, and injecting an electrolyte and a sealant (240) between the substrate and counter electrodes.    USE - The method is useful for manufacturing solar cells (claimed) such as quantum dot sensitized solar cells, which are useful for transportation and photovoltaic power-supply systems equipment and for supplying mobile electricity for lap-top computers, mobile phones and watches.    ADVANTAGE - The method is capable of economically manufacturing the solar cells with high stability and excellent light conversion efficiency.    DETAILED DESCRIPTION - The method comprises forming a titanium dioxide patterned layer comprising nanotubes and/or nanowires on a conductive substrate electrode (230), forming quantum dots (235) on the patterned layer, forming a counter electrode (210), assembling the substrate electrode having titanium dioxide layer comprising nanotubes and/or nanowires and quantum dots and the counter electrode into a sandwich with a gasket (220) disposed between a surface of the substrate electrode and the counter electrode, and injecting an electrolyte and a sealant (240) between the substrate and counter electrodes. The conductive substrate electrode and the counter electrodes are flexible electrodes. The nanotubes and/or nanowires are hollow carbon nanotubes, and have an outer diameter of 10-50 nm and a length of 1-12 mu m. An insulating layer is formed between the titanium dioxide patterned layer and the quantum dot layer. INDEPENDENT CLAIMS are included for:    (1) a solar cell; and    (2) an electroconductive layer.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic block diagram of a solar cell.    Counter electrode (210)    Hole (215)    Gasket (220)    Conductive substrate electrode (230)    Quantum dots (235)    Sealant. (240)