TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Component: The transparent substrate layer is glass or plastic substrate.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The conductive layer is tin indium oxide, tin fluorine oxide, zinc gallium oxide and zinc oxide-alumina of tin-based oxide, antimony oxide and/or zinc oxide. The light absorption layer is semiconductor nanoparticle layer and dye layer. The semiconductor nano-particle layer is silicon, titanium oxide, tin oxide, zinc oxide, tungsten oxide, niobium pentoxide and titanium strontium oxide. The electrolyte layer is iodine/iodized salt electrolyte, ionic liquid, organic hole transport material and inorganic hole-transporting material. The electrode layer is platinum, gold, nickel, copper, silver, indium, ruthenium, palladium, rhodium, iridium, osmium, carbon and conductive polymer.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): Nitrogen-containing compound of formula (II) is reacted to obtain anthracene ring group-benzo nitrogen heterocyclic compound. Preferred Component: The plastic is polyethylene acid diethylene glycol ester, polyethylene naphthalate, polycarbonate, polypropylene, polyacrylamide, triacetyl cellulose and/or polyether sulfone.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The conductive polymer is polyaniline, polypyrrole, polythiophene, phenylene vinylene and/or polyether. SPECIFIC COMPOUNDS - 22 Anthracene ring group-benzo nitrogen heterocyclic compounds e.g. 4-(2-(10-((E)-2-(4-(bis(4-methoxyphenyl)amino)phenyl)ethenyl)anthracen-9-yl)-1,3-benzothiazol-6-yl)benzoic acid of formula (Ia), 4-(2-(10-((E)-2-(5-(4-(bis(4-methoxyphenyl)amino)phenyl)thiophen-2-yl)ethenyl)anthracen-9-yl)-1,3-benzothiazol-6-yl)benzoic acid, (2E)-3-(4-(2-(10-((E)-2-(4-(bis(4-methoxyphenyl)amino)phenyl)ethenyl)anthracen-9-yl)-1,3-benzothiazol-6-yl)phenyl)-2-cyanoprop-2-enoic acid, 2-((5Z)-5-((4-(2-(10-((E)-2-(4-(bis(4-methoxyphenyl)amino)phenyl)ethenyl)anthracen-9-yl)-1,3-benzothiazol-6-yl)cyclohexa-1,3-dien-1-yl)methylidene)-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl)acetic acid and (2E)-3-(4-(2-(10-((E)-2-(4-(4-(bis(4-methoxyphenyl)amino)phenyl)phenyl)ethenyl)anthracen-9-yl)-1,3-benzothiazol-6-yl)phenyl)-2-cyanoprop-2-enoic acid are specifically claimed.