NOVELTY - Making metal oxide based component for use in a solar cell without sintering metal oxide comprises flocculating a metal oxide solution; and processing the flocculated metal oxide solution to form a component for use in a solar cell, where the processing does not involve sintering.    USE - The methods are useful for making metal oxide based component for use in solar cell without sintering metal oxide; and for making component for use in solar cell (all claimed).    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are:    (1) a method of making a component for use in a solar cell comprising forming an aqueous solution by a process that comprises: adding titanium dioxide (TiO2) nanoparticles having a mean crystal diameter of 5-10 nm and aggregate dimension of 95-105 nm to a solvent; adding fused TiO2 nanoparticles having a mean crystal diameter of 10-20 nm and agglomerate dimension of 425-475 nm clusters to the solvent; agitating the aqueous solution; and removing at least some of the solvent from the aqueous solution to produce a metal oxide film, where the metal oxide film is not sintered;    (2) a solar cell component comprising a metal oxide that is produced by a method that does not require sintering of the metal oxide, the method comprising: flocculating a solution of the metal oxide; and processing the flocculated metal oxide solution to form the solar cell component;    (3) a non-sintered solar cell component comprising metal oxide nanoparticles having a mean crystal diameter of 5-10 nm and aggregate dimension of 95-105 nm; and fused metal oxide nanoparticles having a mean crystal diameter of 10-20 nm and agglomerate dimension of 425-475 nm clusters;    (4) a composition for use in making a non-sintered solar cell component comprising a metal oxide solution; and a flocculant for flocculating particles of the metal oxide solution; and    (5) a solar cell comprising an anode; interfacing the anode, a semiconductor that comprises a metal oxide that is produced by a method that does not require sintering of the metal oxide, the method comprises flocculating a solution of the metal oxide; and processing the flocculated metal oxide solution to form the semiconductor; a cathode; and an electrolyte in electrical communication with the semiconductor and the cathode.