NOVELTY - A semiconductor electrode comprises a layer of metal oxide particles; a dye coating a surface of the layer of metal oxide particles; and a carbon nanotube, having at least one anchoring functional group, attached to the layer of metal oxide particles through the anchoring functional group.    USE - In solar cell (claimed).    ADVANTAGE - The semiconductor electrode prevents electrons in an excited state from undergoing electron back-transfer and improves photoelectric conversion efficiency.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) preparing the semiconductor electrode involving forming the layer of metal oxide particles on a transparent electrode; attaching the carbon nanotube having the at least one anchoring functional group to the surface of the layer of metal oxide particles; and adsorbing the dye on the surface of the layer of metal oxide particles; and    (2) a solar cell comprising the semiconductor electrode comprising a transparent electrode in which a conductive material is disposed on a substrate; the layer of metal oxide particles disposed on the transparent electrode; the carbon nanotube anchored on the surface of the layer of metal oxide particles through at least one anchoring functional group conjugated to it; and the dye adsorbed on the layer of metal oxide particles; a counter electrode arranged opposite the semiconductor electrode; and an electrolyte disposed between the semiconductor electrode and the counter electrode, where the at least one anchoring functional group is selected from carboxylic acid group, phosphoric acid group, sulfuric acid group and/or salicylic acid group.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic cross-sectional view of a dye-sensitized solar cell.    semiconductor electrode (100)    transparent electrode (110)    layer of metal oxide particles (140) carbon nanotube (130)    dye (150)    electrolyte layer (200)    counter electrode (300)    dye-sensitized solar cell. (400)