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Coated phosphors and light emitting devices including the same

  • US 9,537,052 B2
  • Filed: 04/07/2014
  • Issued: 01/03/2017
  • Est. Priority Date: 06/03/2011
  • Status: Active Grant
First Claim
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1. A method of coating a phosphor comprising:

  • (a) contacting a nitride phosphor with a sol comprising;

    at least one of silica, alumina, borate and a precursor thereof, and an acid catalyst; and

    (b) heating the phosphor at a temperature in a range of 200°

    C. to 600°

    C., thereby forming a coated phosphor,wherein the sol comprises at least one of colloidal silica and colloidal alumina, andwherein the sol does not include a precursor of silica, a precursor of alumina, or a precursor of borate.

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