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Title: Oxycarbonitride phosphors and light emitting devices using the same

Patent ·
OSTI ID:1107337
; ;

Disclosed herein is a novel family of oxycarbidonitride phosphor compositions and light emitting devices incorporating the same. Within the sextant system of M--Al--Si--O--N--C--Ln and quintuplet system of M--Si--O--N--C--Ln (M=alkaline earth element, Ln=rare earth element), the phosphors are composed of either one single crystalline phase or two crystalline phases with high chemical and thermal stability. In certain embodiments, the disclosed phosphor of silicon oxycarbidonitrides emits green light at wavelength between 530-550 nm. In further embodiments, the disclosed phosphor compositions emit blue-green to yellow light in a wavelength range of 450-650 nm under near-UV and blue light excitation.

Research Organization:
Lightscape Materials, Inc. (Princeton, NJ)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
DOE Contract Number:
EE0003245
Assignee:
Lightscape Materials, Inc. (Princeton, NJ)
Patent Number(s):
8,551,361
Application Number:
13/046,388
OSTI ID:
1107337
Country of Publication:
United States
Language:
English

References (21)

Luminescent material patent January 2012
Nitride phosphor and production process thereof, and light emitting device patent June 2011
Light emitting diode lamp and light emitting device patent April 2012
Nitride-based red phosphors patent-application November 2009
Fluorescent material and light-emitting device employing the same patent-application August 2011
Phosphor and Light Emitting Device patent-application August 2010
Light emitting device with an improved CaAlSiN light converting material patent April 2012
Carbidonitridosilicate Luminescent Substance patent-application October 2008
Phosphor for electron beam excitation and color display device using the same patent November 2006
Carbidonitridosilicate luminescent substance patent August 2011
Phosphor, light source and LED patent August 2007
Carbonitride Based Phosphors and Light Emitting Devices Using the Same patent-application November 2011
Rare-Earth Doped Alkaline-Earth Silicon Nitride Phosphor, Method for Producing and Radiation Converting Device Comprising Such a Phosphor patent-application November 2010
Cerium and europium doped single crystal phosphors patent February 2012
Nitride phosphor and method for preparation thereof, and light emitting device patent August 2007
Phosphor and use thereof patent June 2012
Silicon Carbidonitride Based Phosphors and Lighting Devices Using the Same patent-application March 2012
M-C-N-O Based Phosphor patent-application May 2010
Phosphor and production method of the same, method of shifting emission wavelength of phosphor, and light source and LED patent September 2007
Phosphor and light-emitting equipment using phosphor patent-application January 2007
Multi-grain luminescent ceramics for light emitting devices patent March 2011

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