NOVELTY - Making (m1) a coated article, involves: mixing a photomonomer comprising at least one radiation curable monomer capable of polymerization through exposure to ultraviolet radiation or electron beams with a titanium alkoxide to form a mixture; and applying the mixture directly or indirectly on a substrate and curing the mixture through exposure to ultraviolet radiation or electron beams after its application so as to form a layer on the substrate.    USE - For making a coated article, particularly photovoltaic device (claimed), antifog mirrors, storefront windows, display cases, picture frames, greenhouses or other types of windows.    ADVANTAGE - The coating reduces reflections of the incident light (and may inhibit agglomeration of large water droplets) and permits more light to reach the thin film semiconductor film of the photovoltaic device thereby permitting the device to act more efficiently. The coating has self cleaning properties.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a coated article comprising a substrate and a coating, where the coating comprises a layer comprising a polymerized photomonomer and titanium dioxide;    (2) making a photovoltaic device including a titania-based coating used in a layer, the method involving: the method (m1); and firing the coating layer in an oven at 550-700 degrees C for 1-10 minutes; and using the glass substrate with the coating layer on it as a front glass substrate of the photovoltaic device so that the titania-based coating is provided on a light incident side of the glass substrate;    (3) a photovoltaic device comprising: a photovoltaic film, and at least a glass substrate (20) on a light incident side of the photovoltaic film; an antireflection coating (30) provided on the glass substrate; where the antireflection coating comprises at least a layer produced using a method involving: the method (m1); and firing the coating layer in an oven at 550-700 degrees C for 1-10 minutes;    (4) a coated article comprising: a glass substrate; a photocatalytic and hydrophilic coating provided on the glass substrate; where the photocatalytic and hydrophilic coating comprises at least a layer produced using a method (m1) and firing the coating layer in an oven at 550-700 degrees C for 1-10 minutes.    DESCRIPTION OF DRAWING(S) - The figure shows a cross-sectional view of a photovoltaic device (e.g. solar cell), for converting light to electricity.    Glass substrate (20)    Coating (30)    Front transparent electrode (40)    Photovoltaic semiconductor (50)    Ethyl vinyl acetate film (60)