General Electric Company

Current Lighting Solutions, LLC

Florencio Garcia

James Edward Murphy

Anant Achyut Setlur

Ashfaqul Islam Chowdhury

Robert Joseph Lyons

Prasanth Kumar Nammalwar

Srinivas Prasad Sista

Nagaveni Karkada

William Winder Beers

Digamber Gurudas Porob

Alok Mani Srivastava

Holly Ann Comanzo

Thomas Bert Gorczyca

Fangming Du

Stanton Earl Weaver

Samuel Joseph Camardello

Gopi Chandran Ramachandran

Ravikumar Hanumantha

Swarnagowri Addepalli

Megan Marie Brewster

Anaunt Achyut Setlur

A lighting apparatus includes a semiconductor light source in direct contact with a polymer composite comprising a color stable Mndoped phosphor, wherein the lighting apparatus has a color shift of ≤1.5 MacAdam ellipses after operating for at least 2,000 hour at a LED current density greater than 2 A/cm, a LED wall-plug efficiency greater than 40%, and a board temperature greater than 25° C.

Color stable red-emitting phosphors

A lighting apparatus includes a semiconductor light source in direct contact with a polymer composite comprising a color stable Mndoped phosphor, wherein the lighting apparatus has a color shift of &#x2264;1.5 MacAdam ellipses after operating for at least 2,000 hour at a LED current density greater than 2 A/cm, a LED wall-plug efficiency greater than 40%, and a board temperature greater than 25&#xb0; C.

A population of coated phosphor particles is presented. Each coated phosphor particle has a core including a Mndoped phosphor and a shell including aluminum oxide, titanium oxide, zirconium oxide, zinc oxide, tin oxide, silicon dioxide, hafnium oxide, indium oxide, indium tin oxide, potassium fluoride, titanium nitride, boron nitride, silicon nitride, a polymer material, or a combination thereof. A process for preparing the population of coated phosphor particles is also presented.

Coated manganese doped phosphors

A lighting apparatus is presented. The lighting apparatus includes a semiconductor light source, a color stable Mndoped phosphor and a quantum dot material, each of the color stable Mndoped phosphor and the quantum dot material being radiationally coupled to the semiconductor light source. A percentage intensity loss of the color stable Mndoped phosphor after exposure to a light flux of at least 20 w/cmat a temperature of at least 50 degrees Celsius for at least 21 hours is &#x2264;4%. A backlight device including the lighting apparatus is also presented.

Lighting apparatus including color stable red emitting phosphors and quantum dots

A lighting apparatus includes an LED light source radiationally coupled to a composite material including a phosphor of formula I and a thermally conductive material dispersed in at least a portion of a binder material. The thermally conductive material includes a material selected from the group consisting of indium oxide, tin oxide, indium tin oxide, calcium oxide, barium oxide, strontium oxide, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, strontium hydroxide, zinc hydroxide, aluminum phosphate, magnesium phosphate, calcium phosphate, barium phosphate, strontium phosphate, diamond, graphene, polyethylene nanofibers, carbon nanotubes, silver metal nanoparticles, copper metal nanoparticles, gold metal nanoparticles, aluminum metal nanoparticles, boron nitride, silicon nitride, an alkali metal halide, calcium fluoride, magnesium fluoride, a compound of formula II, and combinations thereof.

Composite materials having red emitting phosphors

A phosphor composition is derived from combining KSiF:Mnin solid form with a saturated solution of a manganese-free complex fluoride including a composition of formula I: A[MF], where A is selected from Na, K, Rb, and combinations thereof and M is selected from Al, Ga, In, Sc, Y, Gd, and combinations thereof. The composition of formula I: A[MF] has a water solubility lower than a water solubility of KSiF. A lighting apparatus including the phosphor composition is also provided.

Moisture-resistant phosphor compositions and associate methods

Methods for fabricating coated semiconductor elements are presented. The methods include the steps of combining a phosphor of formula I and a polymer binder to form a composite material, providing a semiconductor wafer including InGaAlN, wherein 0&#x2264;i; 0&#x2264;j; 0&#x2264;k, and a sum of i, j and k is equal to 1, coating the composite material on a surface of the semiconductor wafer to form a coated semiconductor wafer, and dicing the coated semiconductor wafer using a cutting fluid apparatus to form one or more coated semiconductor elements. A cutting fluid of the cutting fluid apparatus includes a C-Calcohol, a C-Cketone, a C-Cacetate compound, acetic acid, oleic acid, carboxylic acid, a source of A, silicic acid, or a combination thereof.

Methods for fabricating devices containing red line emitting phosphors

A process for fabricating a LED lighting apparatus includes disposing a composite coating on a surface of a LED chip. The composite coating comprises a first composite layer having a manganese doped phosphor of formula I and a first binder, and a second composite layer comprising a second phosphor composition and a second binder. The first binder, the second binder or both include a poly(meth)acrylate.A[MF]:Mn&#x2003;&#x2003;(I)

LED package with red-emitting phosphors

A process for synthesizing a color stable Mndoped phosphor includes contacting a precursor of formula I, in gaseous form at an elevated temperature with a fluorine-containing oxidizing agent to form the color stable Mndoped phosphorA[MF]:Mn&#x2003;&#x2003;Iwherein

A color stable Mn4+ doped phosphor of formula I,A[MF]:Mn&#x2003;&#x2003;I

A process for synthesizing a manganese (Mn) doped phosphor includes milling particles of the a phosphor precursor of formula I, and contacting the milled particles with a fluorine-containing oxidizing agent at an elevated temperatureA[MF]:Mn&#x2003;&#x2003;(I)

Red-emitting phosphors and associated devices

A process for synthesizing a Mndoped phosphor includes contacting a precursor of formula I,A(M,Mn)F&#x2003;&#x2003;Iat an elevated temperature with a fluorine-containing oxidizing agent in gaseous form to form the Mndoped phosphor;wherein

A process for synthesizing a Mndoped phosphor includes contacting a precursor of formula I, at an elevated temperature with a fluorine-containing oxidizing agent in gaseous form to form the color stable Mndoped phosphor;

A process for synthesizing a Mndoped phosphor includes contacting a precursor of formula I,A[MF]:Mn&#x2003;&#x2003; I

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Schenectady, NY, United States of America

Florencio Garcia