TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The semiconductor which forms the semiconductor layer is titanium oxide.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: Compound (I) is preferably of formula (II).R6,R7=H, halo, hydroxy, thio, cyano, optionally substituted alkyl, aryl, alkenyl, alkynyl, alkoxy, amino, or heterocyclyl;R6+R7=cyclic structure;andn=0 or more. SPECIFIC COMPOUNDS - 100 Compounds (I) are disclosed e.g. 2-((5-((4-(bis(4-(2,2-diphenylethenyl)phenyl)amino)phenyl)methylidene)-4,6-dioxo-1,4,5,6-tetrahydropyrimidin-2-yl)sulfanyl)acetic acid of formula (IA), 2-((5-((4-(bis((4-((E)-2-(4-methylphenyl)-2-phenylethenyl)phenyl))amino)phenyl)methylidene)-4,6-dioxo-1,4,5,6-tetrahydropyrimidin-2-yl)sulfanyl)acetic acid, 2-((5-((4-(bis((4-(2,2-bis(4-methoxyphenyl)ethenyl)phenyl))amino)phenyl)methylidene)-4,6-dioxo-1,4,5,6-tetrahydropyrimidin-2-yl)sulfanyl)acetic acid, 2-((5-((4-(diethylamino)phenyl)methylidene)-4,6-dioxo-1,4,5,6-tetrahydropyrimidin-2-yl)sulfanyl)acetic acid, and (5-(1-(7-diethylamino-2-oxo-2H-chromen-3-yl)-eth-(Z)-ylidene)-4,6-dioxo-1,4,5,6-tetrahydro-pyrimidin-2-ylsulfanyl)-acetic acid.    EXAMPLE - (In eq) acetic acid solution of 4-(bis-(4-(2,2-diphenyl-vinyl)-phenyl)-amino)-benzaldehyde, diethylmalonate (1.2), and ammonium acetate (3) were stirred at 120 degrees C for 1 hour. After adding water to the reaction liquid, the reaction liquid was concentrated after water-washing and drying, and processed in silica column to obtain 2-(4-(bis-(4-(2,2-diphenyl-vinyl)-phenyl)-amino)-benzylidene)-malonic acid diethyl ester. Thiourea (1.1) and sodium methoxide (3) were added to ethanol solution of the obtained compound and stirred at 70 degrees C for 1 hour. The organic layer was extracted after concentration and drying, and water and ethyl acetate were added. The mixture was concentrated, water-washed, dried, and processed in a silica column, to obtain 5-(4-(bis-(4-(2,2-diphenyl-vinyl)-phenyl)-amino)-benzylidene)-2-thioxo-dihydro-pyrimidine-4,6-dione. Bromoacetic acid (1.05) and diisopropylethylamine (3) were added to dimethylformamide solution of the obtained compound and stirred at 70 degrees C for 1 hour. Water was added to the reaction liquid, and the reaction liquid was concentrated, water-washed, dried, and processed in a silica column to obtain 2-((5-((4-(bis(4-(2,2-diphenylethenyl)phenyl)amino)phenyl)methylidene)-4,6-dioxo-1,4,5,6-tetrahydropyrimidin-2-yl)sulfanyl)acetic acid. A photoelectric conversion element obtained using the compound had photoelectric conversion efficiency of 4.2%, a short circuit current of 9.2 A, an open circuit voltage of 700 V, and a conversion efficiency durable rate of 0.93.