| 摘要 |
The glass substrate for a solar cell of the present invention is characterized by having a glass composition including, in terms of mass%, 50 to 80% of SiO 2 , 5 to 20% of Al 2 O 3 , 5 to 20% of B 2 O 3 , 0 to 20% of MgO, 0 to 20% of CaO, 0 to 20% of SrO, 0 to 20% of BaO, 0.001 to 2% of SnO 2 , 0 to 1% of As 2 O 3 , having a mass ratio SnO 2 /(Fe 2 O 3 +SnO 2 ) of 0.9 or more, and having a difference between transmittances at a wavelength of 400 nmbefore and after irradiation with ultraviolet ray of 2% or less. |
