Abstract:
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.
Abstract:
Provided, among other things, is a strontium calcium thiogallate phosphor doped with divalent europium, and having the following formula: Sr1-xCaxGa2S4:yEu2+.zGa2S3, where x is 0.0001 to 1, y is a value defining sufficient Eu2+ to provide luminescent emission, and z is 0.0001 to 0.2 based on the mole amount of Sr1-xCaxGa2S4:yEu2+.
Abstract translation:提供了一种掺杂有二价铕的锶钙硫代镓酸盐荧光体,具有下列公式:<?in-line-formula description =“In-line formula”end =“lead”?> Sr 1 -x Ca Ga Ga Ga>>::2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 其中x为0.0001〜1,y为定义足够的Eu的值。 2 +以提供发光,并且z为0.0001至0.2,基于Sr 1-x Ca x Ga 2的摩尔量, 2&lt; 2&gt; 2&lt; 2&gt; 2&lt; 2&gt;
Abstract:
Provided, among other things, is a phosphor according to the formula: [(BvSiO3)x(Mv2SiO3)y(Tv2(SiO3)3)z]m.(SiO2)n:Rε, X (I) wherein x, y and z are any value such that x+y+z=1; By is one or more divalent alkaline earth metals; Mv is one or more monovalent alkaline metals; Tv is one or more trivalent metal ions; Rε is one or more activators selected from Eu2+ and Mn2+; X is one or more halides; m is 1 or 0; and (i) n>3 if m=1 and provides an amount of silica effective to host useful luminescence or (ii) n=1 if m=0.
Abstract:
Disclosed herein is a novel family of oxycarbidonitride phosphor compositions and light emitting devices incorporating the same. Within the sextant system of M—Al—Si—O—N—C—Ln and quintuplet system of M—Si—O—N—C—Ln (M=alkaline earth element, Ln=rare earth element), the phosphors are composed of either one single crystalline phase or two crystalline phases with high chemical and thermal stability. In certain embodiments, the disclosed phosphor of silicon oxycarbidonitrides emits green light at wavelength between 530-550 nm. In further embodiments, the disclosed phosphor compositions emit blue-green to yellow light in a wavelength range of 450-650 nm under near-UV and blue light excitation.
Abstract:
Disclosed herein are novel families of silicon carbidonitride phosphor compositions. In certain embodiments, optimal ranges of carbon content have been identified which provide excellent luminescence and thermal stability characteristics.
Abstract:
Disclosed herein is a novel group of carbidonitride phosphors and light emitting devices which utilize these phosphors. In certain embodiments, the present invention is directed to a novel family of carbidonitride-based phosphors expressed as follows: Ca1-xAlx-xySi1-x+xyN2-x-xyCxy:A (1); Ca1-x-zNazM(III)x-xy-zSi1-x+xy+zN2-x-xyCxy:A (2); M(II)1-x-zM(I)zM(III)x-xy-zSi1-x+xy+zN2-x-xyCxy:A (3); M(II)1-x-zM(I)zM(III)x-xy-zSi1-x+xy+zN2-x-xy-2w/3CxyOw-v/2Hv:A (4); and M(II)1-x-zM(I)zM(III)x-xy-zSi1-x+xy+zN2-x-xy-2w/3-v/3CxyOwHv:A (4a), wherein 0 xy+z, and 0
Abstract:
The present invention relates to 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.
Abstract:
A method for coating moisture sensitive inorganic particles, such as phosphors, comprising mixing the inorganic particles which have a particle size of about 1 to 100 micrometers with nanometer sized coating particles, as of silica, and firing to soften or melt the nanometer sized particles, forming a moisture-impervious inorganic coating on the inorganic particles. The coated particles are washed to remove any uncoated particles and dried.