NOVELTY - Photovoltaic cell (I) comprises: a monocrystalline silicon wafer (100); and a transparent light conversion layer (110) made in the form of polymer layer with a transparent phosphor powder (111) filled in it and kept in contact with an outer surface of the monocrystalline silicon wafer to enhance the absorption of the short-wavelength ( lambda ) of UV radiation of less than 480 nm of the sun and to re-radiate in the wavelength ( lambda ) of 500-980 nm.    USE - Used as a photovoltaic cell.    ADVANTAGE - The transparent phosphor powder increases extra current and enhances the conversion efficiency of photovoltaic cell assembly. (I) high flexibility    DETAILED DESCRIPTION - Photovoltaic cell (I) comprises: a monocrystalline silicon wafer; and a transparent light conversion layer made in the form of polymer layer with a transparent phosphor powder filled in it and kept in contact with an outer surface of the monocrystalline silicon wafer to enhance the absorption of the short-wavelength ( lambda ) of UV radiation of less than 480 nm of the sun and to re-radiate in the wavelength ( lambda ) of 500-980 nm, where the phosphor powder is of formula (Me(II)Ox B2O3:EuCePrTbLi); or a monocrystalline silicon wafer; a glass placed on an outer surface of the monocrystalline silicon wafer; and a transparent thin layer bonded to a back side of the glass and kept in contact with the outer surface of the monocrystalline silicon wafer to enhance the absorption of the sun in a first specific wavelength range and to re-radiate in a second specific wavelength range.    Me(II) = Mg+2, Ca+2, Sr+2 or Ba+2.    An INDEPENDENT CLAIM is included for a transparent phosphor powder being to enhance the absorption of the short-wavelength radiation for the photovoltaic cell assembly and in turn form more separate p-n electron-hole pairs.    DESCRIPTION OF DRAWING(S) - The figure shows an elevational view of a photovoltaic cell.    Monocrystalline silicon wafer (100)    Transparent light conversion layer (110)    Transparent phosphor powder. (111)