A blue light-emitting Eu-activated silicate phosphor having a constitutional formula of Sr.sub.3MgSi.sub.2O.sub.3 which contains Eu in an amount of 0.001 to 0.2 mol per one mole of Mg and further a rare earth metal element selected from the group consisting of Sc, Y, Gd, Tb and La in an amount of 0.0001 to 0.03 mol, per one mole of Mg, gives an emission with enhanced emission strength when it is excited with a light having a wavelength in the region of 350 to 430 nm.

The invention relates to pyrosilicate phosphors comprising a coating of aluminum oxide, to a process for the preparation of these compounds, and to the use thereof as conversion phosphors or in lamps.

The present invention relates to pyrosilicate phosphors, to a process for the preparation thereof and to the use thereof as conversion phosphors. The present invention also relates to an emission-converting material comprising the conversion phosphor according to the invention, and to the use thereof in light sources, in particular pc-LEDs (phosphor converted light emitting devices). The present invention furthermore relates to light sources, in particular pc-LEDs, and to lighting units which comprise a primary light source and the emission-converting material according to the invention.

Scintillating compounds, methods of synthesizing scintillating compounds, and applications of scintillating compounds are disclosed. The scintillating compounds can include cesium rare earth silicates. A scintillating compound can include cesium, silicon, oxygen, fluorine, and one or more of europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and scandium. The scintillating compounds can form unit cells having the general formula Cs.sub.3RESi.sub.4O.sub.10F.sub.2 with RE including rare earth metals, lanthanides, and transition metals

Disclosed are methods of detecting one or more analytes in a sample by: (1) associating the sample with a surface that includes an analyte binding agent to result in the immobilization of the analytes on the surface; (2) contacting the analyte with a composition that includes at least one phosphor compound with an affinity for the analyte; (3) formation of immobilized analyte binding agent-analyte-phosphor complexes on the surface; (4) separating unbound phosphor compounds from the immobilized complexes; (5) detecting a presence or absence of a luminescence signal from the immobilized complexes; and (6) correlating the luminescence signal to the presence or absence of the analyte in the sample. The phosphor compound may include (Sr.sub.1-Ba.sub.).sub.2-j-kMgSi.sub.2O.sub.7:Eu.sub.jDy.sub.k, (Sr.sub.1-Ba.sub.).sub.2-xMgSi.sub.2O.sub.7:Eu.sup.2+Dy.sup.3+, (Sr.sub.1-Ba.sub.).sub.2MgSi.sub.2O.sub.7:Eu.sup.2+Dy.sup.3+, (Sr.sub.1-Ba.sub.).sub.2-xMgSi.sub.2O.sub.7:Eu.sup.2+, and combinations thereof. Additional phosphor compounds may also be utilized, such as [AE].sub.2MgSi.sub.2O.sub.7:Eu.sup.2+, [AE]Al.sub.2O.sub.4:Eu.sup.2+, Dy.sup.3+, and combinations thereof, where AE is at least one of Ca, Sr, or Ba.

The invention belongs to the field of luminescent materials. Disclosed are silicate luminescent materials doped with metal nano particles and preparation methods there for. The silicate luminescent materials doped with metal nano particles are represented by the chemical formula:MLn.sub.1-xSiO.sub.4:xRE,yA; wherein M is one or two elements selected from Li, Na and K; Ln is one or two elements selected from Y, Sc, La and Lu; A is a metal nano particle selected from Ag, Au, Pt, Pd and Cu; RE is one or two ions selected from Eu, Gd, Tb, Tm, Sm, Ce and Dy; 0<x0.1; 0<y0.005. When silicate luminescent materials doped with metal nano particles of the invention are excitated by electron beam, they have higher luminescent efficiency. The luminescent materials are good to be used in field emission light source devices.