Fusion formable alkali-free intermediate thermal expansion coefficient glass
US9643883B2 · kind B2 · utility
2Cited by
57References
13Claims
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Key dates
| Filing date | Feb 6, 2015 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Feb 6, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A compositional range of high strain point and/or intermediate expansion coefficient alkali metal free aluminosilicate and boroaluminosilicate glasses are described herein. The glasses can be used as substrates or superstrates for photovoltaic devices, for example, thin film photovoltaic devices such as CdTe or CIGS photovoltaic devices or crystalline silicon wafer devices. These glasses can be characterized as having strain points ≧600° C., thermal expansion coefficient of from 35 to 50×10−7/° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.