NOVELTY - A multi-element polycrystal comprises a mixed crystal essentially formed of elements with different absorption wavelength ranges where one element absorbs light over a longer range of wavelength from a shorter to longer wavelength range than the other element. Each of the crystal grains of the mixed crystal has a crystallographic texture composed of discrete regions dispersed in a matrix.    USE - The multi-element polycrystal is used in a solar cell (claimed).    ADVANTAGE - The polycrystal is capable of efficiently absorbing sunlight at low cost.    DETAILED DESCRIPTION - Multi-element polycrystal comprises a mixed crystal essentially formed of elements A and B having different absorption wavelength ranges and having an average composition represented by A1xBx or C1-xDxE, where element B absorbs light over a longer range of wavelength from a shorter to longer wavelength range than the element A. Each of the crystal grains (10) of the mixed crystal has a crystallographic texture composed of discrete regions dispersed in a matrix (20). The average composition of the matrix is represented with A1-x1 B1x or C1-x2Dx2E, and the average composition of the discrete regions (30) is represented with, A1-x2Bx2 or C1x2Dx2E.    x=greater than x1 but less than x2    INDEPENDENT CLAIMS are included for:    (a) a method of manufacturing a multi-element polycrystal having polycrystalline grains each being formed of a crystallographic texture having discrete regions dispersed in a matrix, comprising preparing a melt containing multi elements; and cooling the melt while controlling a cooling rate and/or a composition of the melt to obtain a multi-element polycrystal; and    (b) a method of manufacturing a solar cell using a multi-element polycrystal manufactured as above.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a silicon germanium (SiGe) polycrystal grain (SiGe bulk) in which numerous discrete regions are dispersed in the matrix.    Crystal grains (10)    Matrix (20)    Discrete regions (30)