Iron content of solar ultra-white glass

This specialized glass, with iron oxide content below 0. 015%, achieves light transmittance rates exceeding 91%—compared to 88-89% for conventional solar glass—directly enhancing photovoltaic (PV) module efficiency. . Iron exists mainly in two forms: ferrous iron (Fe²⁺) and ferric iron (Fe³⁺). Fe³⁺ absorbs ultraviolet and blue light, with less impact on visible light but sometimes creating a yellow tone. 5 weight percent; K2O: 0 wt% -2 wt%;. . Pilkington Optiwhite™ is a low-iron extra clear float glass with very high light transmission. By adopting international first-rate production technology and equipment, it has special suede and flower Solar design. [pdf]