Beta-sialon, method for producing same and light-emitting device using same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 22, 2015
Grant Date -
Sep 13, 2012
app pub date -
Nov 4, 2010
filing date -
Nov 10, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
β-Sialon comprising Eu2+ that is present in a solid solution form in β-sialon represented by Si6-zAlzOzN μm [wherein z is 0.3-1.5], which shows, when excited with light of 450 nm in wavelength, a peak wavelength of fluorescent spectrum of 545-560 nm, a half-value breadth of 55 nm or greater, and an external quantum efficiency of 45% or greater. The β-sialon can be produced by blending at least one kind of oxide selected from aluminum oxide and silicon oxide with silicon nitride and aluminum nitride in such a manner as to give z of 0.3-1.5, further adding thereto a europium compound and a β-sialon powder having an average particle diameter of 5 μm or greater and an average degree of circularity of 0.7 or greater, each in a definite amount, and baking the mixture.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully