Patent ID: 7893350

Claim:
A solar cell comprising: a glass substrate; first and second conductive layers with at least a photoelectric film provided therebetween; wherein a composition of the glass substrate comprises: Ingredient wt. % SiO 2 67-75% Na 2 O 10-20% CaO 5-15% total iron (expressed as Fe 2 O 3 ) <=0.1% % FeO <=0.005 glass redox <=0.08 antimony oxide 0 to less than 0.01% cobalt oxide 0% cerium oxide 0% wherein the glass substrate has visible transmission of at least 90%, TS transmission of at least 90%; a transmissive a* color value of −1.0 to +1.0, a transmissive b* color value of from −0.5 to +1.5.