TECHNOLOGY FOCUS - POLYMERS - Preferred Parameters: The inorganic fluorescent compound absorbs radiation with a maximum absorption peak wavelength in the range from 250 to 400 nm and emits radiation with a maximum emitting peak wavelength in the range from 500 to 1000 nm. The organic fluorescent compound absorbs radiation with a maximum absorption peak wavelength in the range from 300 to 500 nm and emits radiation with a maximum emitting peak wavelength in the range from 500 to 1000 nm. The inorganic fluorescent compound has a particle size in the range from 1 to 100 nm. Preferred Composition: The concentration of the inorganic compound in the polymer film varies from a high concentration on one (upper) side of the polymer film to a low concentration on the opposite (lower) side of the polymer film, whereas the concentration of the organic fluorescent compound in the polymer film varies in contrary from a low concentration on the one (upper) side of the polymer film to an high concentration on the opposite (lower) side of the polymer film. Preferred Components: The inorganic fluorescent compound is selected from sulfides, thiogallates, nitrides, oxy-nitrides, silicates, aluminates, apatites, borates, oxides, phosphates, halophosphates, sulfates, tungstenates , tantalates, vanadates, molybdates, niobates, titanates, germanates and halides based phosphors. Organic fluorescent compound is selected from fluoresceins, rhodamines, coumarins, pyrenes, cyanines, perylenes or di-cyano-methylenes. The polymer film comprises a fluorescent semiconductor quantum dot. It comprises a photosetting resin, and/or a thermosetting resin, and/or a thermoplastic resin with suitable transmittance values for radiation between 200 and 1200 nm. Preferred Device: The module comprises at least one layer selected from amorphous silicon (a-Si), monocrystalline silicon (c-Si), polycrystalline silicon (poly-Si), multicrystalline silicon (mc-Si), cadmium telluride (CdTe), copper indium gallium selenide (CIGS) or gallium arsenide (GaAs). EXAMPLE - No suitable example given.