Alkali-free alumino-borosilicate glass used as substrate glass in thin film transistor displays and thin layer solar cells contains oxides of silicon, boron, aluminum, magnesium, strontium, and barium

摘要

Alkali-free alumino-borosilicate glass contains (in wt.%) 58-65 SiO 2, 6-11.5 B 2O 3, 14-25 Al 2O 3, 4-8 MgO, 0-8 CaO, 2.6-4 SrO, 0-0.5 BaO, 3 SrO + BaO and 0-2 ZnO. The glass has a thermal expansion coefficient alpha 20/300 of 2.8-3.8 X 10 -6>/K.