Fusion Formable Sodium Containing Glass
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United States of America Patent
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Aug 31, 2017
app pub date -
Apr 6, 2017
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May 29, 2009
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Abstract
Sodium-containing 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 ≧540° C., thermal expansion coefficient of from 6.5 to 9.5 ppm/° C., as well as liquidus viscosities in excess of 50,000 poise. As such, they are ideally suited for being formed into sheet by the fusion process.
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