Solar-Tectic LLC presents sapphire glass for PV and display applications. This sapphire glass can be used as a substrate on which to deposit highly oriented semiconductor films for high efficiency solar cells. Sapphire glass can also be used for display applications, such as device covers. It has a Mohs 8 hardness for anti-scratch purposes, including sand scratch resistance. The glass consists of a thin layer of crystalline Al203 on highly textured MgO on inexpensive glass (soda-lime and other kinds).
Update (April 21st, 2017): We are pleased to announce that a patent application (14/663,067) has been allowed by the US Patent Office.