NOVELTY - The luminescent organic-inorganic nanocomposite multilayer or monolayer film comprises a polymer matrix, and zinc oxide nanoparticles (2 wt.%) incorporated in the polymer matrix. The nanoparticles have an average granulometry of 3-7 nm, and are coated by a ligand consisting of a functionalization ligand, compounds having a carboxyl function or an amine function and long chain fatty acids such as oleic acid. The polymer matrix comprises acrylic units and photopolymerizable monomeric units such as acrylic monomer units, and is obtained by photopolymerization.    USE - The luminescent organic-inorganic nanocomposite multilayer or monolayer film is useful as a layer for converting photons of ultraviolet spectrum into photons of visible spectrum, as a glaze on a surface of an outer protective sheet of a photovoltaic module, as an intercalated sheet of a photovoltaic module, as luminescent layer for manufacturing a luminescent photovoltaic concentrator, in a display device integrated in a windshield of a motor vehicle and as a layer for converting light emitted by a light emitting diode (all claimed).    ADVANTAGE - The luminescent organic-inorganic nanocomposite multilayer or monolayer film enhances the conversion efficiency of the photovoltaic cell, and exhibits excellent absorption properties in UV region and emission properties in visible region and enhanced quantum efficiency.    DETAILED DESCRIPTION - The luminescent organic-inorganic nanocomposite multilayer or monolayer film comprises a polymer matrix, and zinc oxide nanoparticles (2 wt.%) incorporated in the polymer matrix. The nanoparticles have an average granulometry of 3-7 nm, and are coated by a ligand consisting of a functionalization ligand, compounds having a carboxyl function or an amine function and long chain fatty acids such as oleic acid. The polymer matrix comprises acrylic units and photopolymerizable monomeric units such as acrylic monomer units, and is obtained by photopolymerization. The film coats a surface of a support made of glass or plastic material, and provides maximum absorption at a wavelength of less than 375 nm and/or minimum emission at a wavelength of 450-600 nm. The monolayer film has a thickness of 100 nm, and the multilayer film has a thickness of 500 nm to 50 mu m. An INDEPENDENT CLAIM is included for a process for manufacturing a luminescent organic-inorganic nanocomposite multilayer or monolayer film.