NOVELTY - A dye-sensitized solar cell has an electrolyte layer interposed between semiconductor electrode (102) and counter electrode. The semiconductor electrode has a conductive substrate (110) on which electron recombination protection layer (112) and porous metal oxide semiconductor layer (114) are sequentially formed such that the conductive substrate is not exposed to electrolyte layer. A dye molecule layer (116) is adsorbed to the surface of porous metal oxide semiconductor layer.    USE - Dye-sensitized solar cell.    ADVANTAGE - The dye-sensitized solar cell has improved energy conversion efficiency by preventing the electronic loss through the conductive substrate of semiconductor electrode. The solar cell is manufactured simply and economically.    DETAILED DESCRIPTION - A dye-sensitized solar cell has an electrolyte layer interposed between semiconductor electrode and counter electrode. The semiconductor electrode has a conductive substrate on which electron recombination protection layer and porous metal oxide semiconductor layer are sequentially formed, such that the conductive substrate is not exposed to electrolyte layer. A dye molecule layer is adsorbed to the surface of porous metal oxide semiconductor layer. The electron recombination protection layer is made of metal or metal oxide, such as titanium, titanium oxide, zinc oxide, chromium oxide, tungsten oxide or niobium oxide. The porous metal oxide semiconductor layer contains titanium dioxide, tin oxide or zinc oxide. The conductive substrate is a transparent substrate made of conductive polymer or metallic substrate, provided with conductive layer. The conductive layer is made of platinum or carbon. The electrolyte is made of iodine-based redox liquid electrolyte. The dye-sensitized solar cell further has a metal layer made of titanium, zinc, chromium, tungsten or niobium. An INDEPENDENT CLAIM is included for manufacture of dye-sensitized solar cell.    DESCRIPTION OF DRAWING(S) - The drawing shows the enlarged sectional view of a portion of semiconductor electrode included in the dye-sensitized solar cell.    Semiconductor electrode (102)    Conductive substrate (110)    Electron recombination protection layer (112)    Porous metal oxide semiconductor layer (114)    Dye molecule layer (116)