Embodiments of the invention include a wavelength-converting material defined by AE.sub.3x1y+zRE.sub.3x2+yz[Si.sub.9wAl.sub.w(N.sub.1yC.sub.y).sup.[4](N.sub.16zwO.sub.z+w).sup.[2]]Eu.sub.x1,Ce.sub.x2, where AE=Ca, Sr, Ba; RE=Y, Lu, La, Sc; 0x10.18; 0x20.2; x1+x2>0; 0y1; 0z3; 0w3.

The present disclosure relates to a fluorescent powder and a light-emitting device including the same. The fluorescent powder includes an inorganic compound. The inorganic compound contains components including an element M, an element A, an element D, an element E, and an element R. The element M is selected from Eu, Ce, Mn, Tb, Dy, and Tm, the element A is selected from Mg, Ca, Sr, and Ba, the element D is selected from B, Al, Ga, In, La, Gd, Sc, Lu, and Y, the element E is selected from Si, Ge, Zr, and Hf, and the element R is at least two elements selected from N, O, F, and Cl. In a powder X-Ray Diffraction (XRD) spectrum with CoK radiation, the inorganic compound at least has diffraction peaks within ranges of an Bragg angle (2) from 27.3 to 28.3, 29.7 to 30.7, 41.9 to 42.9, and 43.5 to 44.5.

The present invention relates to an oxynitride luminescent material, a preparation method, and an LED light source manufactured thereby. Chemical compositions of the luminescent material are M1 a M2 b Si c O d N e:xEu 2+, M1 being one or two or a combination of more than two of elements: Mg, Ca, Sr, Ba, and Zn; M2 being one or a combination of two of elements: Tb and Tm; a, b, c, d, e and x being molar coefficients of atoms, and 1a4, 0.001b0.6, 0.8c1.2, 0<d6, 0<e<2, 0.001x0.3. An excitation spectrum of the luminescent material is wide, and covers ultraviolet light to blue light regions, emitted light is green light to orange red light, and the chemical stability is good, the thermostability is high, and the luminescent material is suitable for being encapsulated into an LED light source in cooperation with an ultraviolet light, near ultraviolet light or blue light LED chip.

A phosphor material is presented that includes a blend of a first phosphor, a second phosphor and a third phosphor. The first phosphor includes a composition having a general formula of RE.sub.2yM.sub.1+yA.sub.2ySc.sub.ySi.sub.nwGe.sub.wO.sub.12+:Ce.sup.3+ wherein RE is selected from a lanthanide ion or Y.sup.3+, where M is selected from Mg, Ca, Sr or Ba, A is selected from Mg or Zn and where 0y2, 2.5n3.5, 0w1, and 1.51.5. The second phosphor includes a complex fluoride doped with manganese (Mn.sup.4+), and the third phosphor include a phosphor composition having an emission peak in a range from about 520 nanometers to about 680 nanometers. A lighting apparatus including such a phosphor material is also presented. The light apparatus includes a light source in addition to the phosphor material.

Provided is a phosphor including: a host material expressed by a general formula (Ca1-xMex)a(Ce1-y-zLayPrz)bSicXd (0.5b/a7, 1.5c/(a+b)3.5, 4d/(a+b)6, 0x0.5, 0y<1, 0z0.5, and 0y+z<1, where X is at least one element selected from N, O, F, and Cl); and at least one activator that is selected from Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm, and is solid-solutioned in the host material, wherein Me is at least one element selected from Ba, Mg, Sr, Mn, and Zn, and the host material includes, as a main phase, a phase that exhibits a diffraction peak having a relative intensity of 5% or more in ranges of Bragg's angles (2) of 10.68-11.41, 18.52-19.46, 31.21-31.58, 31.61-32.20, and 36.81-37.49 of an X-ray diffraction pattern when a relative intensity of a diffraction peak having the strongest intensity is set to 100% in the X-ray powder diffraction pattern.