TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Support: The conductive transparent support in the cell is made of layer of glass or of plastic polymer coated with tin oxide doped with fluorine or indium tin oxide. The support is coated with a porous semiconductive film such as titanium oxide nanoporous film.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: The organic compound is an organic dye. The dye is selected from complexes of polypyridinic compounds with transition metal, porphyrines, phthalocyanines, perylenes, naphthocyanines, chinones (sic), cianines (sic), chinoimmines (sic) and/or photosynthetic pigments.Preferred Solvent: The solvent used for preparing dye sensitized solar cell is selected from alcohol, ketone, ether, nitrite, halogenated aliphatic hydrocarbon, aliphatic hydrocarbon, aromatic hydrocarbon, and/or esters.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The water based electrolyte gel comprises polymeric compound(s) and electrolyte solution(s) containing iodine/iodide as redox electrolyte. The water based electrolyte gel comprises a polymer obtained by polymerization of acrylate and/or methacrylate monomer of formula: (CH2=C(R1)-C(O))n-R2, wheren = 1-4;R1 = H, CH3, C2H5 or C3H7;R2 = hydroxyl group, amino group, R' group or OR' group;R' = hydrocarbon residue substituted with one or more hydroxyl groups, carboxyl groups, carbonyl groups, amino groups, amide groups, glycidyl groups, ether groups, nitric groups, cyano groups, isocyanate groups, alkyloxy groups, alkylenyloxy groups;or mixtures, with a cross-linking agent such as 1,4-butane diol diacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate. The water based electrolyte gel comprises a polymer obtained by aqueous solution of hydrophilic polymer. The hydrophilic polymer is selected from vinyl polymer, polysaccharides, polylactic acid, combinations of polysaccharides with polyethylene oxide, combinations of polyethylene oxide and polycaprolactone and/or polyethylene glycol. The vinyl polymer is selected from polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid and its salts, polyethylacrylic acid and its salts, polymethacrylic acid and its salts, polymethylvinyl ether, poly(2-hydroxyethyl methacrylate), polyvinyl acetate, polyvinyl amine and like polymers. The polysaccharides are selected from starch, cellulose, pectin, guar gum, alginates, carrageenans, xanthans and dextrans. The hydrophilic polymer(s) is cross-linked with aldehyde or units containing glycidyl groups, carboxyl groups or their mixtures. The sealing agent used for cell is epoxy resin, sodium silicate, ionomer resins and/or aluminum foil laminated with polymer foil.