TECHNOLOGY FOCUS - ELECTRONICS - Preferred Arrangement: An organic photoelectric transducer consists of a primary organic layer containing the high molecular compound and a secondary organic layer containing an electron donating compound, provided between transparent or semi-transparent electrodes. Alternately, the organic photoelectric transducer consists of primary organic layer containing a fullerene derivative as an electron-accepting compound and secondary organic layer containing the high molecular compound, provided between the transparent or semi-transparent electrodes.    TECHNOLOGY FOCUS - POLYMERS - Preferred Compound: The high molecular compound is a block copolymer. The high molecular compound further consists of benzothiadiazole-containing repeating unit of formulae (6-8). The bithiophene-containing repeating unit (1) is of formula (9). EXAMPLE - Aliquat 336 (RTM: methyltrioctyl ammonium chloride having density of 0.884 g/ml) (in g) (0.65), dioxaborolane-containing compound (1.1276) of formula (I) and 5,5'-dibromo-2,2'-bithiophene (0.8194) were mixed in a flask, under nitrogen atmosphere, and toluene (25 ml) was added. Then, 17.5% sodium carbonate aqueous solution (6.8 ml) was dripped into reaction mixture for 10 minutes, and palladium acetate (1.6 mg) and tris o-methoxyphenyl phosphine (4.8 mg) were added, heated at 85-105 degrees C, and cooled, to obtain polymer having bithiophene-containing repeating unit of formula (a). Compound (I) (1.5386) and benzothiadiazole-containing compound (1.5669) of formula (II) were added to the reaction solution, and toluene (25 ml) was add-mixed. The reaction mixture was bubbled with argon gas for 40 minutes, and deaerated. Then, 17.5% sodium carbonate aqueous solution (6.8 ml) was dripped into reaction mixture for 10 minutes, and palladium acetate (1.3 mg) and tris o-methoxyphenyl phosphine (5.6 mg) were added, and heated 105 degrees C for 2 hours. Subsequently, toluene (50 ml), palladium acetate (2 mg), tris o-methoxyphenyl phosphine (7.5 mg) and phenyl boric acid (0.306) were add-mixed at 105 degrees C for 9 hours. An aqueous layer was removed from the reaction liquid, and aqueous solution formed by dissolving sodium N,N-diethyl dithiocarbamate (3.1) in water (30 ml) was add-mixed to organic layer at 85 degrees C for 2 hours. The organic layer was then washed, and dripped into methanol. The deposited substance was filter-separated, dried and dissolved in toluene (300 ml). The resulting toluene solution was dripped into methanol (2500 ml), and the deposited substance was filter-separated and dried under reduced pressure, to obtain high molecular compound having repeating unit (a) and benzothiadiazole-containing repeating unit of formula (b), and weight average molecular weight of 333000 and number average molecular weight of 122000.