NOVELTY - An electrode prepared from an electroconducting substrate is provided. A colloid comprising metal oxide(s) (3), a solvent, optionally an adhesive agent, and optionally binder(s) is prepared. An optional thermal sintering agent, a chemical sintering agent, and an optional titania precursor are added to the colloid. The obtained composition is applied to the electrode. The coated electrode is heated for sintering the metal oxide followed by cooling. The electrode coated with the sintered metal oxide is then retrieved.    USE - Ultra-low temperature sintering of metal oxide paste coating of electrodes in preparation of dye-sensitized solar cells (claimed).    ADVANTAGE - The method enables rapid and economical preparation of robust solar cells, ensuring good adhesion both within the metal oxide film and between the metal oxide film and substrate. The metal oxide film has high porosity. The method ensures that the metal oxide particles adhered to each other, thus efficiently carrying current. Sintering also ensures complete removal of any organic binder and/or solvent present in the metal oxide colloid paste, thus increasing the porosity of metal oxide film. The film does not collapse after application.    DETAILED DESCRIPTION - An electrode prepared from an electroconducting substrate is provided, and the substrate is optionally pretreated to ensure good adhesion of metal oxide film. A colloid comprising metal oxide(s), a solvent (greater than 0 wt.% to 500 wt.% based on the weight of metal oxide), optionally an adhesive agent, and optionally binder(s) is prepared. A thermal sintering agent (up to 20 wt.% based on the weight of metal oxide) is optionally added to the colloid. A chemical sintering agent (greater than 0 vol.% up to 10 vol.% based on the volume of solvent) is added to the prepared colloid or colloid added with thermal sintering agent. A titania precursor is optionally added to the colloid in place of water. The electrode is optionally pretreated with a metal oxide precursor, preferably titanium tetrachloride or titanium isopropoxide. The obtained composition is added to the electrode before or after pretreatment. The coated electrode is heated to a temperature of at most 150 degrees C for sintering the metal oxide followed by cooling to 100 degrees C. The metal oxide film is optionally post-treated with metal oxide precursor solution and re-sintered to a temperature of at most 150 degrees C, followed by cooling to 100 degrees C. The electrode coated with the sintered metal oxide is then retrieved. An INDEPENDENT CLAIM is included for preparation of dye-sensitized solar cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the dye-sensitized solar cell.    Transparent plate (1)    Transparent conducting oxide (2)    Metal oxide (3)    Titanium dioxide (4)    Platinum (5)