Osram Sylvania Inc.

Other

Gte Products Corporation

Roger B., Jr. Hunt

Paul W. Salvi

Chung-nin Chau

Chung-Nin Chau

Roger B Hunt, Jr

Paul W Salvi

Albert M Cavallaro

Robert E Levin

Karen Lee

Tracy V Silloway

John S Tulk

Steven C Fowler

Jenace Ann Yurchisin

Jr Hunt Roger B

A phosphor blend for a compact fluorescent lamp is described wherein the phosphor blend comprises a green-emitting Tbphosphor, a YO:Euphosphor, a SrBPO:Euphosphor, a MgGeOF:Mnphosphor, and optionally a BaMgAlO:Euphosphor, wherein the blend contains from 1% to 20% by weight of the SrBPO:Euphosphor and from 5% to 30% by weight of the MgGeOF:Mnphosphor. A compact fluorescent lamp having a phosphor coating containing the phosphor blend produces a light that is perceived as more pleasing than the light produced by standard compact fluorescent lamps.

Phosphor blend for a compact fluorescent lamp and lamp containing same

An aqueous coating suspension for a fluorescent lamp comprises particles of an alkaline earth chlorofluorophosphate phosphor activated by antimony and manganese, water, at least one water soluble binder, a defoaming agent, a surface active agent and a sufficient amount of ammonium chloride for improving lamp maintenance.

Aqueous phosphor coating suspension for lamps

An improved method for a single step firing synthesis of borate phosphors wherein at least about half the amount of a volatile, low melting point, boron source such as boric acid or boron oxide is replaced with an equivalent amount of boron nitride. The method having the advantages of a single step firing and providing better control over the stoichiometry of the phosphor.

Borate phosphor synthesis using boron nitride

Small-sized, high brightness (La,Ce,Tb) PO.sub.4 phosphors having an average particle size of less than about 4.0 microns can be made by adding boric acid and lithium carbonate to the rare earth phosphate co-precipitate prior to firing. The small-sized, high brightness phosphors have a brightness equivalent to or greater than larger-sized phosphors of the same composition.

Small-sized lanthanum cerium terbium phosphate phosphors and method of

Metal phosphide used as a raw material in the synthesis of alkaline earth metal halophosphate phosphor activated by antimony and manganese acts as a reducing agent to prevent oxidation of the antimony and manganese. The result is maximum availability of trivalent antimony and divalent manganese for incorporation into the phosphor lattice.

Method of making alkaline earth metal halophosphate phosphor using metal

A lanthanum cerium terbium gadolinium phosphate phosphor has the composition La.sub.1-x-y-z Ce.sub.x Tb.sub.y Gd.sub.z PO.sub.4, where x=0.2 to 0.45, y=0.127 to 0.137, and z=0.001 to 0.1. The phosphor has improved brightness and/or maintenance over a lanthanum cerium terbium phosphate phosphor without gadolinium. The phosphor can be prepared by reacting a lanthanum cerium terbium gadolinium oxide with boron phosphate in the presence of a flux forming compound containing lithium in an inert or reducing atmosphere.

Growing community of inventors

Sayre, PA, United States of America

Chung-Nin Chau