NOVELTY - A solar cell comprises a patterned glass substrate, where surface(s) of the patterned glass substrate has a surface roughness of 0.1-1.5 microns; and two conductive layers with photoelectric film(s) in-between. The glass substrate comprises 67-75 wt.% silicon dioxide, 10-20 wt.% sodium oxide, 5-15 wt.% calcium oxide, 0.001-0.06 wt.% total iron (expressed as iron(III) oxide), 0-0.07 wt.% cerium oxide, and 0.01-1 wt.% antimony oxide. It has visible transmission of at least 90%, a transmissive aasterisk color value of -1-1 and a transmissive basterisk color value of 0-1.5.    USE - As solar cell.    ADVANTAGE - The combination of low iron content, antimony, and/or patterning the glass substrate results in a substrate with high visible transmission and excellent light refracting characteristics. Antimony is provided in low-iron high transmission glass, thus the resulting glass may be free of cerium oxide to realize good stability of solar performance (e.g. no or reduced loss of total solar transmission after UV or sunlight exposure).    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) a method of making patterned glass comprising providing a molten glass batch in a furnace or melter comprising from 67-75% silicon dioxide (SiO2), 0.01-0.06% total iron, and antimony oxide; forwarding a glass ribbon from the furnace or melter to a nip between two rollers, at least one of the rollers having pattern defined in a surface, where the glass ribbon reaches the nip at 1900-2400degreesF; at the nip, transferring the pattern from the roller(s) to the glass ribbon, the glass ribbon being at 1100-1600degreesF upon exiting the nip; and annealing the glass ribbon at least after the ribbon exits the nip, to provide a patterned glass having a visible transmission of at least 90%, 0.01-0.06% total iron, and 0.01-1% antimony oxide; and    (2) a glass substrate comprising 67-75 wt.% silicon dioxide (SiO2), 10-20 wt.% sodium oxide (Na2O), 5-15 wt.% calcium oxide (CaO), 0.001-0.06 wt.% total iron (expressed as iron(III) oxide (Fe2O3)), 0-0.07 wt.% cerium oxide, and 0.01-1 wt.% antimony oxide, where the glass substrate has visible transmission of at least 90%, a transmissive aasterisk color value of -1-1 and a transmissive basterisk color value of 0-1.5.    DESCRIPTION OF DRAWING(S) - The figure is a cross sectional view of a solar cell.