skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Color stable phosphors for LED lamps and methods for preparing them

Abstract

An LED lamp includes a light source configured to emit radiation with a peak intensity at a wavelength between about 250 nm and about 550 nm; and a phosphor composition configured to be radiationally coupled to the light source. The phosphor composition includes particles of a phosphor of formula I, said particles having a coating composition disposed on surfaces thereof; ((Sr.sub.1-zM.sub.z).sub.1-(x+w)A.sub.wCe.sub.x).sub.3(Al.sub.1-ySi.sub.y-)O.sub.4+y+3(x-w)F.sub.1-y-3(x-w) I wherein the coating composition comprises a material selected from aluminum oxide, magnesium oxide, calcium oxide, barium oxide, strontium oxide, zinc oxide, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, strontium hydroxide, zinc hydroxide, aluminum phosphate, magnesium phosphate, calcium phosphate, barium phosphate, strontium phosphate, and combinations thereof; and A is Li, NA, K, or Rb, or a combination thereof; M is Ca, Ba, Mg, Zn, or a combination thereof; and 0<x.ltoreq.1.10, 0.ltoreq.y.ltoreq.0.5, 0.ltoreq.z.ltoreq.0.5, 0.ltoreq.x.ltoreq.x.

Inventors:
; ;
Publication Date:
Research Org.:
General Electric Company, Niskayuna, NY, USA
Sponsoring Org.:
USDOE
OSTI Identifier:
1109086
Patent Number(s):
8,593,062
Application Number:
13/080,099
Assignee:
General Electric Company (Niskayuna, NY)
DOE Contract Number:  
FC26-06NT42934
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Murphy, James Edward, Setlur, Anant Achyut, and Camardello, Samuel Joseph. Color stable phosphors for LED lamps and methods for preparing them. United States: N. p., 2013. Web.
Murphy, James Edward, Setlur, Anant Achyut, & Camardello, Samuel Joseph. Color stable phosphors for LED lamps and methods for preparing them. United States.
Murphy, James Edward, Setlur, Anant Achyut, and Camardello, Samuel Joseph. Tue . "Color stable phosphors for LED lamps and methods for preparing them". United States. https://www.osti.gov/servlets/purl/1109086.
@article{osti_1109086,
title = {Color stable phosphors for LED lamps and methods for preparing them},
author = {Murphy, James Edward and Setlur, Anant Achyut and Camardello, Samuel Joseph},
abstractNote = {An LED lamp includes a light source configured to emit radiation with a peak intensity at a wavelength between about 250 nm and about 550 nm; and a phosphor composition configured to be radiationally coupled to the light source. The phosphor composition includes particles of a phosphor of formula I, said particles having a coating composition disposed on surfaces thereof; ((Sr.sub.1-zM.sub.z).sub.1-(x+w)A.sub.wCe.sub.x).sub.3(Al.sub.1-ySi.sub.y-)O.sub.4+y+3(x-w)F.sub.1-y-3(x-w) I wherein the coating composition comprises a material selected from aluminum oxide, magnesium oxide, calcium oxide, barium oxide, strontium oxide, zinc oxide, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, strontium hydroxide, zinc hydroxide, aluminum phosphate, magnesium phosphate, calcium phosphate, barium phosphate, strontium phosphate, and combinations thereof; and A is Li, NA, K, or Rb, or a combination thereof; M is Ca, Ba, Mg, Zn, or a combination thereof; and 0<x.ltoreq.1.10, 0.ltoreq.y.ltoreq.0.5, 0.ltoreq.z.ltoreq.0.5, 0.ltoreq.x.ltoreq.x.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {11}
}

Patent:

Save / Share: