NOVELTY - The catalyst electrode (7) contains at least a metal layer (9) and a corrosion resistant conductive layer (10) formed on the metal layer. A catalyst compound is contained in the corrosion resistant conductive layer. The catalyst electrode is used in a dye sensitized solar cell which has a transparent semiconductor electrode and an electrolyte layer. The catalyst electrode is arranged in opposite to the semiconductor electrode through the electrolyte layer.    USE - As counter electrode for dye sensitized solar cell (claimed), as electrode for organic synthesis, electrochemical device.    ADVANTAGE - The metal is used as the collector even in corrosion environment by forming a conductive layer having corrosion resistance on the metal layer, resulting in reduction of material and manufacturing cost of electrode. Since the electrical resistance value of the collector is reduced, the reaction of oxidant of oxidation-reduction contained in the electrolyte is reduced. The electrode provides high energy conversion efficiency to the solar cell. The solar cell of high durability, high efficiency stabilized for a long period of time and outstanding photoelectric conversion efficiency is obtained inexpensively.    DETAILED DESCRIPTION - The catalyst electrode (7) contains at least a metal layer (9) and a corrosion resistant conductive layer (10) formed on the metal layer. A catalyst compound is contained in the corrosion resistant conductive layer. The catalyst electrode is used in a dye sensitized solar cell which has a transparent semiconductor electrode containing a pigment which has photosensitization effect and an electrolyte layer including chemical substance used as an oxidation reduction components. The catalyst electrode is arranged in opposite to the semiconductor electrode through the electrolyte layer. An INDEPENDENT CLAIM is included for dye sensitized solar cell.    DESCRIPTION OF DRAWING(S) - The figure shows the cross-sectional model of structure of catalyst electrode.    Catalyst electrode (7)    Electrode substrate (8)    Metal layer (9)    Corrosion resistant conductive layer (10)