Moisture-resistant electroluminescent phosphor with high initial brightness and method of making
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United States of America Patent
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Nov 16, 2010
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Jan 12, 2007
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Jan 26, 2006
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Abstract
The present invention is an electroluminescent phosphor wherein each individual phosphor particle is encapsulated in an inorganic coating applied by an atomic layer deposition (ALD) coating method. In a preferred embodiment, the coating is aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps.
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