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Title: Blue-green phosphor for fluorescent lighting applications

Abstract

A fluorescent lamp including a phosphor layer including Sr.sub.4 Al.sub.14 O.sub.25 :Eu.sup.2+ (SAE) and at least one of each of a red, green and blue emitting phosphor. The phosphor layer can optionally include an additional, deep red phosphor and a yellow emitting phosphor. The resulting lamp will exhibit a white light having a color rendering index of 90 or higher with a correlated color temperature of from 2500 to 10000 Kelvin. The use of SAE in phosphor blends of lamps results in high CRI light sources with increased stability and acceptable lumen maintenance over, the course of the lamp life.

Inventors:
; ; ;
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175278
Patent Number(s):
6867536
Application Number:
10/317,372
Assignee:
General Electric Company (Schenectady, NY)
Patent Classifications (CPCs):
C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
DOE Contract Number:  
FC26-99FT40632
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Srivastava, Alok, Comanzo, Holly, Manivannan, Venkatesan, and Setlur, Anant Achyut. Blue-green phosphor for fluorescent lighting applications. United States: N. p., 2005. Web.
Srivastava, Alok, Comanzo, Holly, Manivannan, Venkatesan, & Setlur, Anant Achyut. Blue-green phosphor for fluorescent lighting applications. United States.
Srivastava, Alok, Comanzo, Holly, Manivannan, Venkatesan, and Setlur, Anant Achyut. Tue . "Blue-green phosphor for fluorescent lighting applications". United States. https://www.osti.gov/servlets/purl/1175278.
@article{osti_1175278,
title = {Blue-green phosphor for fluorescent lighting applications},
author = {Srivastava, Alok and Comanzo, Holly and Manivannan, Venkatesan and Setlur, Anant Achyut},
abstractNote = {A fluorescent lamp including a phosphor layer including Sr.sub.4 Al.sub.14 O.sub.25 :Eu.sup.2+ (SAE) and at least one of each of a red, green and blue emitting phosphor. The phosphor layer can optionally include an additional, deep red phosphor and a yellow emitting phosphor. The resulting lamp will exhibit a white light having a color rendering index of 90 or higher with a correlated color temperature of from 2500 to 10000 Kelvin. The use of SAE in phosphor blends of lamps results in high CRI light sources with increased stability and acceptable lumen maintenance over, the course of the lamp life.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {3}
}

Patent:

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