Lightscape Materials, Inc.

Usr Optonix Inc.

Sawsan Aziz

Yongchi Tian

Perry Niel Yocom

Alison Sides

Olga Zakharov

Takashi Hase

The present invention relates to certain metal silicate halide (halosilicate) phosphors, the phosphors with an oxide coating, methods of making the phosphors, and light emitting diode- (LED-) based lighting devices modified with the phosphors.

Metal silicate halide phosphors and LED lighting devices using the same

A phosphor containing O, Al, In, at least one element M selected from a group consisting of Sr, Ca and Ba, and Eu, as an activator, where the M, the Al, the In and the Eu are present in an atomic ratio M:Al:In:Eu of m:2n(1&minus;y):2n(y):a, 0.3<m/n&lE;2, 0&lE;y&lE;0.2, and 1&times;10,&lE;a&lE;1&times;10,, exhibits excellent luminance, afterglow and durability. Also a phosphor containing O, Al, In, B, at least one element M selected from a group consisting of Sr, Ca and Ba, and Eu,as an activator, where the M, the Al, the In, the B and the Eu are present in an atomic ratio M:Al:In:B:Eu of m:2n(1&minus;y&minus;z):2n(y&minus;z):2n(z):a, 0.3&lE;m/n&lE;2, 0<y&lE;0.2, 0<z&lE;0.05, and 1&times;10,&lE;a&lE;1&times;10,exhibits excellent luminance, afterglow and durability.

Indium-substituted aluminate phosphor and method for making the same

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Hackettstown, NJ, United States of America

Sawsan Aziz