TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The electrolyte further comprises iodine-based oxidation-reduction pair. The electric color variable photonic crystal compounds comprise: inorganic compounds consisting of silicone, titanium, carbon, barium, strontium, iron, nickel, cobalt, lead, aluminum, copper, silver, gold, tungsten, molybdenum, zinc and zirconium; quantum dot; and titanium oxide (TiOx), aluminum oxide (AlOx), silicon oxide (SiOx), lead zirconate, lead titanate, lead (zirconium-titanium)oxide, strontium titanate, barium titanate, (barium, strontium) titanate, calcium titanate, lithium niobate, gold and silver. The amount of electric color variable photonic crystal compounds is 5-40 wt.%. The iodine-based oxidation-reduction pair consists of lithium iodide, sodium iodide, potassium iodide, magnesium iodide, copper iodide, silicon iodide, manganese iodide, barium iodide, molybdenum iodide, calcium iodide, iron iodide, cesium iodide, zinc iodide, mercury iodide, ammonium iodide, methyl iodide, methylene iodide, ethyl iodide, ethylene iodide, isopropyl iodide, isobutyl iodide, benzyl iodide, benzoyl iodide, allyl imidazolium iodide and 1-methyl-3-propyl imidazolium iodide, and has a concentration of 0.05-10 M. The content of iodine in iodine-based oxidation-reduction pair is 1-10 pts. wt.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The hole transport materials have a concentration of 0.05-10 M, and include 4-(2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)-N,N-bis(4-(2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)aniline compound of formula (I), 4-(2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)-N-(4-(4-((4-(2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)-phenyl-amino)phenyl)phenyl)-N-phenyl-aniline compound of formula (II), preferably 4-(2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)-N,N-bis(4-(2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)aniline, 4-(5-phenyl-2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)-N,N-bis(4-(5-phenyl-2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)aniline, 4-(5-(2-phenyl phenyl)-2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)-N,N-bis(4-(5-(2-phenyl phenyl)-2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)aniline, 4-(5-tert-butyl-2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)-N,N-bis(4-(5-tert-butyl-2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)aniline, N-(4-(2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)-4-(4-((4-(2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)-phenyl-amino)phenyl)-N-phenyl-aniline, N-phenyl-N-(4-(5-phenyl-2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)-4-(4-(phenyl-(4-(5-phenyl-2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)amino)phenyl)aniline, and N-(4-(5-(1-naphthyl)-2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)-4-(4-((4-(5-(1-naphthyl)-2,3-dihydrothieno(3,4-b)(1,4)dioxin-7-yl)phenyl)-phenyl-amino)phenyl)-N-phenyl-aniline.R1-R7 = H, 6-12C-aryl, 1-10C-alkenyl or 1-10C-alkyl.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The electric color variable photonic crystal compounds comprise polymer consisting of polystyrene, polyethylene, polypropylene, polyvinyl chloride and polyethylene terephthalate, and are encapsulated to the capsule.