Low Emissivity Glass Incorporating Phosphorescent Rare Earth Compounds
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United States of America Patent
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Issued Date -
Oct 15, 2015
app pub date -
Apr 10, 2014
filing date -
Apr 10, 2014
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Abstract
Methods, and coated panels fabricated from the methods, are disclosed to form multiple coatings, (e.g., one or more infrared reflective layers), with minimal color change before and after heat treatments. The optical properties of the coating (e.g. the transmissivity and the IR emissivity) are generally coupled. In some embodiments, silicate materials are doped with rare earth elements. These doped silicate materials are able to absorb ultra-violet (UV) photons and emit photons in the visible range. This allows the transmissivity to be at least partially decoupled from the IR emissivity of the coated panel, resulting in a larger range of performance.
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