TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Composition: The glass frit contains bismuth-based glass, lead borosilicate-based glass and/or lead-free glass, preferably alumina, barium oxide, boron trioxide, beryllium oxide, bismuth oxide, cerium oxide, niobium oxide, lead oxide, silica, tin oxide, titanium oxide, tantalum oxide, zinc oxide or zirconia.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The electroconductive metal particles contain silver, gold, copper, aluminum, nickel, palladium, cobalt, chromium, platinum, tantalum, indium, tungsten, tin, zinc, lead, chromium, ruthenium, tungsten, iron, rhodium, iridium and/or osmium or their alloys, preferably silver or its alloy, and have shape selected from cube, flake, granule, cylinder, ring, rod, needle, prism, disk, fiber, pyramid, sphere, spheroid, prolate spheroid, oblate spheroid, ellipsoid, ovoid and random non-geometric shape. The paste further comprises 0.1-10 wt.% of metal oxide chosen from aluminum oxide, antimony pentoxide, cerium oxide, copper oxide, gallium oxide, gold oxide, hafnium oxide, indium oxide, iron oxide, lanthanum oxide, molybdenum oxide, nickel oxide, niobium oxide, selenium oxide, silver oxide, strontium oxide, tantalum oxide, titanium oxide, tin oxide, tungsten oxide, vanadium pentoxide, yttrium oxide, zinc oxide and zirconium oxide. The paste further contains less than 5 wt.% of additive chosen from dopant, leveling agent, defoamer and wetting agent. The substrate contains silicon semiconductor and/or multicrystalline or single crystalline silicon optionally coated with silicon nitride. The substrate is solar cell wafer.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The amide-based wax contains a primary, secondary or tertiary fatty amide or fatty bis-amide, preferably behenamide (docosanamide), capramide, caproamide, caprylamide, elaidamide, erucamide (cis-13-docosenamide), ethylene bis-octadecanamide, ethylene bis-oleamide, lauramide (dodecanamide), methylene bis-octadecanamide, myristamide, oleamide (cis-9-octadecenamide), palmitamide, pelargonamide, stearamide (octadecanamide), stearyl stearamide, hydrogenated castor oil/amide wax blend, or polyamide wax. The wax is blended in the ratio of 0.2-2 wt.% based on the weight of the paste composition. The solvent is acetophenone, benzyl alcohol, 2-butoxyethanol, 3-butoxy-butanol, butyl carbitol, ( gamma )-butyrolactone, 1,2-dibutoxyethane, diethylene glycol monobutyl ether, dimethyl glutarate, dibasic ester mixture of dimethyl glutarate and dimethyl succinate, dipropylene glycol, dipropylene glycol monoethyl ether acetate, dipropylene glycol butyl ether, 2-(2-ethoxyethoxy) ethyl acetate, ethylene glycol, 2,4-heptanediol, hexylene glycol, methyl carbitol, N-methyl-pyrrolidone, 2,2,4-trimethyl-1,3-pentanediol di-isobutyrate, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate (texanol), phenoxy ethanol, 1-phenoxy-2-propanol, phenyl carbitol, propylene glycol phenyl ether, terpineol, tetradecane, glycerol and/or tripropylene glycol butyl ether.    TECHNOLOGY FOCUS - POLYMERS - Preferred Resin: The resin is ethyl cellulose resin, glycerol ester of hydrogenated rosin and/or acrylic binder, preferably ethyl cellulose resin having molecular weight of 20000-40000 or rosin ester resin having molecular weight of 1000-2000, and is contained in the ratio of 0.01-5 wt.% based on the weight of the paste composition. The paste further comprises dispersant in an amount of 0.1-5 wt.% based on the weight of the paste composition. The dispersant is polymeric dispersant of formula (I).R1=H or CH3;andn=4-200.