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Title: Methods for preparation of nanocrystalline rare earth phosphates for lighting applications

Abstract

Disclosed here are methods for the preparation of optionally activated nanocrystalline rare earth phosphates. The optionally activated nanocrystalline rare earth phosphates may be used as one or more of quantum-splitting phosphor, visible-light emitting phosphor, vacuum-UV absorbing phosphor, and UV-emitting phosphor. Also disclosed herein are discharge lamps comprising the optionally activated nanocrystalline rare earth phosphates provided by these methods.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1083772
Patent Number(s):
8419974
Application Number:
12/332,881
Assignee:
General Electric Company (Schenectady, NY)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
DOE Contract Number:  
FC26-03NT41945
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Comanzo, Holly Ann, Manoharan, Mohan, Martins Loureiro, Sergio Paulo, Setlur, Anant Achyut, and Srivastava, Alok Mani. Methods for preparation of nanocrystalline rare earth phosphates for lighting applications. United States: N. p., 2013. Web.
Comanzo, Holly Ann, Manoharan, Mohan, Martins Loureiro, Sergio Paulo, Setlur, Anant Achyut, & Srivastava, Alok Mani. Methods for preparation of nanocrystalline rare earth phosphates for lighting applications. United States.
Comanzo, Holly Ann, Manoharan, Mohan, Martins Loureiro, Sergio Paulo, Setlur, Anant Achyut, and Srivastava, Alok Mani. Tue . "Methods for preparation of nanocrystalline rare earth phosphates for lighting applications". United States. https://www.osti.gov/servlets/purl/1083772.
@article{osti_1083772,
title = {Methods for preparation of nanocrystalline rare earth phosphates for lighting applications},
author = {Comanzo, Holly Ann and Manoharan, Mohan and Martins Loureiro, Sergio Paulo and Setlur, Anant Achyut and Srivastava, Alok Mani},
abstractNote = {Disclosed here are methods for the preparation of optionally activated nanocrystalline rare earth phosphates. The optionally activated nanocrystalline rare earth phosphates may be used as one or more of quantum-splitting phosphor, visible-light emitting phosphor, vacuum-UV absorbing phosphor, and UV-emitting phosphor. Also disclosed herein are discharge lamps comprising the optionally activated nanocrystalline rare earth phosphates provided by these methods.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {4}
}

Works referenced in this record:

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YPO4 nanocrystals: preparation and size-induced lattice symmetry enhancement
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Electrodeless low-pressure mercury discharge lamp
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Method of making lanthanum cerium terbium phosphate phosphor
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First Observation of Quantum Splitting Behavior in Nanocrystalline SrAl 12 O 19 :Pr, Mg Phosphor
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Non-stoichiometric ytterbium phosphate powder of low infrared reflectivity
patent, June 1999


Quantum-splitting oxide-based phosphors, method of producing, and rules for designing the same
patent, September 2003


Method for the preparation of spherical particles of a rare earth phosphate
patent, May 1995


Method to produce nanocrystalline powders of oxide-based phosphors for lighting applications
patent, December 2007