TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Compound: The alkali metal is lithium. The metal oxide semiconductor particles contain titanium oxide, zinc oxide, stannic oxide and/or niobium oxide. Preferred Process: The manufacture of metal oxide semiconductor electrode further involves performing pressurizing process, ultrasonic-welding process, microwave irradiation process, ultraviolet irradiation process or ozone treatment process. Preferred Material: The photoelectric transducer contains an electrolyte, sensitizing dye and an electroconductive counter electrode along with the metal oxide semiconductor electrode. Preferred Process: The electrochemical processing is performed by applying negative voltage to metal oxide semiconductor electrode and supplying electricity in presence of an electrolytic solution containing lithium ion. Preferred Property: The metal oxide semiconductor particles have particle size of 100 nm or less.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: The solvent is 1-30C primary alkyl alcohol.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The metal oxide semiconductor paste contains 0.1-10 weight% of binder resin. Preferred Material: The transparent electrode base material and the base material of the electroconductive counter electrode are made of polymer films. Preferred Definitions:    M=magnesium, aluminum, silicon, scandium, titanium, zinc, gallium, germanium, strontium, yttrium, zirconium, niobium, indium, tin, barium, lanthanum or tantalum.    EXAMPLE - (In weight parts) titanium acetyl acetonato (8), 1-octanol (45), Aerosil P-25 (RTM: titanium oxide having average particle diameter of 24 nm) (45) and zirconia beads were mixed. Then, N-200 (RTM: ethyl cellulose) (2) was added to the reaction mixture, to obtain metal oxide semiconductor paste. The obtained paste was coated on a Toby 113B-N125N (RTM: polyethylene naphthalate film) and heated at 140 degrees C for 1 hour. Then, ultraviolet-ozone treatment was performed on the metal oxide semiconductor electrode at 140 degrees C for 15 minutes, to obtain a film. Then, electrochemical processing was performed by adding lithium chlorate acetonitrile liquid and applying electricity, to obtain metal oxide semiconductor electrode. A photoelectric conversion cell was formed using the obtained metal oxide semiconductor electrode, D149 dye (RTM: sensitizing dye), chenodeoxycholic acid, tertiary butyl alcohol and acetonitrile. The obtained photoelectric conversion cell had excellent conversion efficiency.