TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Component: The substrate is glass substrate.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Process: The graphene thin film is formed by depositing graphene on silica substrate and separating the silica substrate and the graphene. The graphene is deposited on silica substrate by supplying methane gas and mixture of hydrogen and argon on the silica substrate deposited with nickel. The silica substrate and the graphene are separated by extracting graphene in a thin film form by sequentially dipping the silica substrate deposited with the graphene in hydrogen fluoride solution and nickel etchant, and etching silica and nickel. A bottom electrode (20) including indium-tin oxide (ITO) is formed on the glass substrate. Preferred Composition: The nanoparticles are zinc oxide, copper oxide, barium carbonate, bismuth oxide, calcium oxide, cerium oxide, chromium oxide, iron oxide, gallium oxide, indium oxide, lithium oxide, lithium carbonate, lithium-cobalt oxide, magnesium oxide, manganese carbonate, manganese dioxide, manganese oxide, niobium oxide, lead oxide, antimony oxide, tin oxide, strontium oxide, tantalum oxide, titanium oxide, barium-titanium oxide, vanadium oxide, tungsten oxide or zirconium oxide, preferably zinc oxide. The graphene thin film has graphite metal layer. The metal in the graphite metal layer is chosen from nickel, cobalt, iron, platinum, gold, aluminum, chromium, copper, magnesium, manganese, molybdenum, rhodium, silicon, tantalum, titanium, tungsten, uranium, vanadium and zirconium.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The metal acetate dihydrate is of formula: M(CH3COO)2.2H2O, where M is chosen from zinc, aluminum, barium, bismuth, calcium, cerium, chromium, iron, gallium, indium, lithium, cobalt, magnesium, manganese, niobium, lead, antimony, tin, strontium, tantalum, titanium, vanadium, tungsten and zirconium.    TECHNOLOGY FOCUS - POLYMERS - Preferred Process: The polymer solution with distributed nanoparticles is prepared by forming a mixed solution by dissolving metal acetate dihydrate in N,N-dimethylformamide, forming nanoparticles by reducing heating temperature after the mixed solution is heated and mixing a polymer material in the mixed solution including the nanoparticles. Preferred Composition: The polymer thin film includes poly-N-vinylcarbazole.