Grirem Advanced Materials Co., Ltd.

General Research Institute for Nonferrous Metals

Grirem Hi-tech Co., Ltd.

Guoke Re Advanced Materials Co., Ltd.

Rare Earth Functional Materials (xiong'an) Innovation Center Co., Ltd.

Rare Earth Functional Materials (xiong'an) Innovation Co., Ltd.

Huaqiang He

Yuanhong Liu

Ronghui Liu

Yunsheng Hu

Hao Wu

Lei Cui

Tao He

Xiaowei Huang

Weidong Zhuang

Jinqiu Yu

Chengpeng Diao

Liang Luo

Nan Li

Qian Ma

Wei Gao

Chunlei Zhao

Ying Fang

Huibing Xu

Xiaofang Zhou

The present invention relates to a rare earth halide scintillating material. The material has a general chemical formula LaCeBr, wherein 0.001x1, and 0.0001y0.1. The rare earth halide scintillating material involved in the present invention has excellent scintillation properties of high light output, high energy resolution, and fast decay.

Rare earth halide scintillation material

A rare earth halide scintillation material the chemical formula of the material being CeBr, wherein 0.0001x0.1. The rare earth halide scintillation material has excellent scintillation properties including high light output, high energy resolution, and fast decay.

The present invention provides a rare-earth halide scintillating material and application thereof. The rare-earth halide scintillating material has a chemical formula of RECeX, wherein RE is a rare-earth element La, Gd, Lu or Y, X is one or two of halogens Cl, Br and I, 0&#x2264;a&#x2264;1.1, 0.01&#x2264;b&#x2264;1.1, and 1.0001&#x2264;a+b&#x2264;1.2. By taking a +2 valent rare-earth halide having the same composition as a dopant to replace a heterogeneous alkaline earth metal halide in the prior art for doping, the rare-earth halide scintillating material is relatively short of a halogen ion. The apparent valence state of a rare-earth ion is between +2 and +3. The rare-earth halide scintillating material belongs to non-stoichiometric compounds, but still retains a crystal structure of an original stoichiometric compound, and has more excellent energy resolution and energy response linearity than the stoichiometric compound.

Rare-earth halide scintillating material and application thereof

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&#x3b1; radiation, the inorganic compound at least has diffraction peaks within ranges of an Bragg angle (2&#x3b8;) from 27.3&#xb0; to 28.3&#xb0;, 29.7&#xb0; to 30.7&#xb0;, 41.9&#xb0; to 42.9&#xb0;, and 43.5&#xb0; to 44.5&#xb0;.

Fluorescent powder and light-emitting device including the same

An oxynitride orange-red fluorescent substance and a light-emitting film or sheet and a light-emitting device comprising the same are disclosed. The chemical formula of the oxynitride orange-red fluorescent substance is MASiNO:dR in which the element M is one or more of the elements selected from Ca, Sr and Ba, the element A is Al or a mixture of Al with one or more of the elements selected from Ga, La, Sc and Y, the element R is one or more of the elements selected from Ce, Eu and Mn, 0.8&#x2266;m&#x2266;1.2, 1&#x3c;a&#x3c;1.7, 1&#x3c;x&#x3c;1.7, 3&#x3c;y&#x3c;4.2, 0&#x3c;z&#x3c;0.7, and 0.001&#x2266;d&#x2266;0.2.

Oxynitride orange-red fluorescent substance and light-emitting film or sheet and light-emitting device comprising the same

A silicon-containing phosphor for LED and its preparation method, and the devices incorporating the same. The phosphor in the present invention can be represented as AO.aSiO.bAX:mEu,nR, wherein A is at least one metal element selected from a group consisting of Sr, Ba, Ca, Mg, and Zn; X is at least one halogen element selected from a group consisting of F, Cl, Br, and I; R is at least one element selected from a group consisting of Bi, Y, La, Ce, Pr, Gd, Tb, and Dy; 0.1&#x3c;a&#x3c;2, 0.005&#x3c;b&#x3c;0.08, 0.005&#x3c;m&#x3c;0.5, 0.005&#x3c;n&#x3c;0.5, and m+n&#x3c;1. The phosphor has excellent luminescent performance and good stability, wide excitation band, and adjustable emission wavelength. White or color LED can be obtained by combining the phosphor of the present invention with UV, purple or blue light LED chip.

Silicon-containing phosphor for LED, its preparation and the light emitting devices using the same

Disclosed are a red light-emitting nitride material, a light-emitting part and a light-emitting device comprising the same. The General Formula of the light-emitting material is: M(Al,B)SiNO:Eu, R, wherein M is at least one of the alkaline earth metal elements Mg, Ca, Sr, Ba and Zn; R is at least one of the rare earth elements Y, La, Ce, Gd and Lu; and 0.9&#x2266;a&#x3c;1.1, 0.9&#x2266;b&#x2266;1, 1&#x2266;c&#x2266;1.5, 2.5&#x3c;d&#x3c;5, 0&#x3c;e&#x3c;0.1, 0&#x3c;m&#x3c;0.05, 0&#x3c;n&#x3c;0.1 and 1&#x3c;c/b&#x3c;1.5. The light-emitting material can be effectively excited by a radiation light having a wavelength below 500 nm, and then emits a visible red light having a wide spectrum from 500 nm to 780 nm. The light-emitting material of the present disclosure has the characteristics of high light-emitting efficiency, good temperature properties and a wide half-width etc., and the material can be used alone or in combination with other light-emitting materials for making high performance light-emitting devices.

Red light-emitting nitride material, and light-emitting part and light-emitting device comprising the same

Provided are a Light Emitting Diode (LED) red fluorescent material and a lighting device having the same. The florescent material consists of elements M, A, D, X, L and Z, wherein element M at least contains one or more than one element of Be, Mg, Ca, Sr, Ba and Zn; element A at least contains one or more than one element of B, Al, Ga, In, La, Gd, Lu, Sc and Y; element D at least contains one or more than one element of Si, Ge, C, Sn, Ti, Zr and Hf; element X at least contains one or more than one element of N, O and F; element L at least contains one or more than one element of S, Se and Te; and element Z at least contains one or more than one element of a rare earth element or a transition-metal element.

Light emitting diode (LED) red fluorescent material and lighting device having the same

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Beijing, China

Huaqiang He