Moisture-resistant phosphor and associated method

Details Moisture-resistant phosphor and associated method Moisture-resistant phosphor and associated method

2010-07-27

2011-11-15

Lorengo, Jerry A (Department: 1731)

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

C252S30140F, C252S30160R, C252S30140R, C428S403000

Reexamination Certificate

active

08057706

ABSTRACT:
A phosphor material contains encapsulated particles of manganese (Mn4+) doped fluoride phosphor. A method of encapsulating such particles is also provided. Each particle is encapsulated with a layer of a manganese-free fluoride phosphor. The use of such a phosphor material in a lighting apparatus results in improved stability and acceptable lumen maintenance over the course of the apparatus life.

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N. Avci, J. Musschoot, P. F. Smet, K. Korthout, A. Avci, C. Detavernier and D. Poelman; Microencapsulation of Moisture-Sensitive CaS:Eu2+ Particles with Aluminum Oxide; Journal of the Electrochemical Society, 156 11 J333-J337 2009.

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