NOVELTY - The photovoltaic converter comprises sets of photovoltaic cells arranged in series along a luminous flux in optional order. Each of photovoltaic cells includes a transparent surface dielectric layer (1a), a semiconductor layer (2a), a transparent dielectric substrate (3), and 2f pairs of (+) and (-) discrete contact electrodes (4), where f is number of the photovoltaic cells in the photovoltaic converter. The surface dielectric layer has a refraction index n1, and is faced to a light source when operates. The semiconductor layer has a refraction index n2 and a thickness.    USE - The photovoltaic converter is useful in a solar battery (claimed).    ADVANTAGE - The simple photovoltaic converter can be economically and efficiently manufactured without environmental impacts thus enhancing output of the solar batteries.    DETAILED DESCRIPTION - The photovoltaic converter comprises sets of photovoltaic cells arranged in series along a luminous flux in optional order. Each of photovoltaic cells includes a transparent surface dielectric layer (1a), a semiconductor layer (2a), a transparent dielectric substrate (3), and 2f pairs of (+) and (-) discrete contact electrodes (4), where f is number of the photovoltaic cells in the photovoltaic converter. The surface dielectric layer has a refraction index n1, and is faced to a light source when operates. The semiconductor layer has a refraction index n2 and a thickness that is multiple to k lambda /(2n2), is placed the surface dielectric layer, and comprises of p-n and/or n-p junction. The transparent dielectric substrate has a refraction index n3, where the refraction indexes are conformed to pair of inequalities n2 less than n1 and n2 less than n3 and/or to the pair of inverse inequalities n2 greater than n1 and n2 greater than n3, under conditions, lambda is an average wavelength within selected sub-band of the solar spectrum, and k is integer number equal to 1, 2, or 3. The (+) and (-) electrodes of each pair are connected to the respective p- and n- regions of the semiconductor layer of each photovoltaic cell, and are placed on one side of the semiconductor layer. The dielectric substrate of each overlying photovoltaic cell is the surface dielectric layer of the subjacent photovoltaic cell. The semiconductor layers of photovoltaic cells have thicknesses multiple to same above-mentioned value, which is determined for the average wavelength of the single selected wavelength sub-band. The semiconductor layers of different photovoltaic cells have thicknesses multiple to the different above-mentioned values, which are determined for the average wavelengths of the various selected wavelength sub-bands. The photovoltaic cells are divided into two sets, where the semiconductor layers of photovoltaic cells included in first set have thicknesses multiple to the same above-mentioned value, which is determined for the average wavelength of the single selected wavelength sub-band and the semiconductor layers of photovoltaic cells included in second set have thicknesses multiple to the different above-mentioned values, which are determined for the average wavelengths of the various selected wavelength sub-bands. The refraction indexes are further conformed to double inequality n1 less than n-2 less than n3 or to an inverse double inequality n1 greater than n2 greater than n3, under the conditions. The semiconductor layer further has the thickness that is equal to lambda /(4n2)+m lambda /(2n2), where lambda is average wavelength within selected sub-band of the solar spectrum and m is integer number equal to 1 or 2. The dielectric layers of adjacent photovoltaic cells have different refraction indexes. The dielectric substrate of each overlying photovoltaic cell is the surface dielectric layer of the subjacent photovoltaic cell. The firs set of photovoltaic cells further includes: the transparent surface dielectric layer that has a refraction index n11 and is faced to the light source when operates; and the semiconductor layer that has refraction index n12, is placed under the surface dielectric layer and comprises either p-n and/or n-p junction; a transparent dielectric substrate having refraction index n13i, where under the conditions, the refraction indexes are conformed to the pair of inequalities n12 less than n11 and n12 less than n13 an/or to the pair of inverse inequalities n12 greater than n11 and n12 greater than n13. The second set of photovoltaic cells includes: the optically transparent surface dielectric layer that has a refraction index n21 and is faced to the light source when operates; the semiconductor layer that has refraction index n22, is placed under the surface dielectric layer and comprises p-n or n-p junction; and the transparent dielectric substrate having refraction index n23, where under the conditions, the refraction indexes are conformed to the double inequality n21 less than n22 less than n23 and/or to the inverse double inequality n21 greater than n22 greater than n23, and the semiconductor layer has thickness that is equal to the value lambda (4n22)+m lambda /(2n22), where lambda is average wavelength within selected sub-band of the solar spectrum and m is integer number equal to 1 or 2. The dielectric substrate of each overlying photovoltaic cell is the surface dielectric layer of the subjacent photovoltaic cell. An INDEPENDENT CLAIM is included for a solar battery.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a photovoltaic converter.    Surface dielectric layer (1a)    Semiconductor layer (2a)    Transparent dielectric substrate (3)    Discrete contact electrodes. (4)