ALKALI-FREE HIGH STRAIN POINT GLASS

摘要

A compositional range of high strain point alkali metal free, silicate, aluminosilicate and boroaluminosilicate glasses are described herein. The glasses can be used as substrates for photovoltaic devices, for example, thin film photovoltaic devices such as CIGS photovoltaic devices. These glasses can be characterized as having strain points≧570° C., thermal expansion coefficient of from 5 to 9 ppm/° C.