Fluorescent material and method for making the same

    公开(公告)号:US11059726B2

    公开(公告)日:2021-07-13

    申请号:US16247921

    申请日:2019-01-15

    IPC分类号: C01G21/00 C09K11/66 C09K11/71

    摘要: A fluorescent material includes at least one fluorescent compound having a structure formula of ABXZY3-Z as defined in the specification, a plurality of NH3+ group-containing ions bound to the fluorescent compound through protonation of amine groups of an amine composition, and a plurality of COO− group-containing ions bound to the fluorescent compound through deprotonation of carboxyl groups of an acid composition. The amine composition has a total hydrogen bonding Hansen solubility parameter (TδH) ranges from 2.4 to 3.3 (cal/cm3)1/2, and the acid composition has a total polar Hansen solubility parameter (TδP) which is less than 1.4 (cal/cm3)1/2.

    LUMINESCENT MATERIALS DOPED WITH METAL NANO PARTICLES AND PREPARATION METHODS THEREFOR
    5.
    发明申请
    LUMINESCENT MATERIALS DOPED WITH METAL NANO PARTICLES AND PREPARATION METHODS THEREFOR 审中-公开
    具有金属纳米颗粒的发光材料及其制备方法

    公开(公告)号:US20140374658A1

    公开(公告)日:2014-12-25

    申请号:US14372743

    申请日:2012-03-29

    IPC分类号: H01J1/63 C09K11/71 C09K11/77

    摘要: The invention belongs to the field of luminescent materials. Disclosed are luminescent materials doped with metal nano particles and preparation methods therefor. The luminescent materials doped with metal nano particles are represented by the chemical formula: A5-x(PO4)2SiO4:xRE@My, wherein @ is for coating, M is inner core, M is one 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, Dy and Mn; A is one or two elements selected from Ca, Sr, Ba, Mg, Li, Na and K; x is stoichiometric coefficient, 0

    摘要翻译: 本发明属于发光材料领域。 公开了掺杂有金属纳米颗粒的发光材料及其制备方法。 掺杂有金属纳米颗粒的发光材料由以下化学式表示:A5-x(PO4)2SiO4:xRE @ My,其中@为涂层,M为内芯,M为选自Ag,Au, Pt,Pd和Cu; RE是选自Eu,Gd,Tb,Tm,Sm,Ce,Dy和Mn中的一种或两种离子; A是选自Ca,Sr,Ba,Mg,Li,Na和K中的一种或两种元素; x是化学计量系数,0

    ALKALINE EARTH METAL SILICATE LUMINOPHORES AND METHOD FOR IMPROVING THE LONG TERM STABILITY THEREOF
    6.
    发明申请
    ALKALINE EARTH METAL SILICATE LUMINOPHORES AND METHOD FOR IMPROVING THE LONG TERM STABILITY THEREOF 有权
    碱金属土金属硅酸盐和改善其长期稳定性的方法

    公开(公告)号:US20120193579A1

    公开(公告)日:2012-08-02

    申请号:US13501609

    申请日:2010-10-10

    IPC分类号: C09K11/59 C09K11/61 C09K11/71

    摘要: The present invention relates to alkaline earth metal silicate luminophores having improved long-term stability and to a corresponding method for improving the long-term stability of alkaline earth metal silicate luminophores. The luminophore according to the invention is a luminophore comprising a base lattice according to the general chemical formula EAxSiyOz, where x, y, z>0. The component EA is formed by one or more alkaline earth metals. An activator, for example Eu2′ or Mn2′, is doped into the base lattice. The luminophore has the fundamental property to absorb radiation in a first wavelength range and emit radiation in a second wavelength range that is different from the first wavelength range. The luminophore is designed in the form of crystals. According to the invention, the surfaces of the crystals of the luminophore are chemically modified such that at least portions of the surfaces thereof are formed by a chemical compound of the general formula EauZ2. The component Z is formed by anions, which can be chemically combined with the EA cations of the luminophore. The variable u is equal to an ion charge of the anions Z. The chemical modification is therefore not a coating.

    摘要翻译: 本发明涉及具有改善的长期稳定性的碱土金属硅酸盐发光体以及提高碱土金属硅酸盐发光体的长期稳定性的相应方法。 根据本发明的发光体是发光体,其包含根据一般化学式EAxSiyOz的基本晶格,其中x,y,z> 0。 组分EA由一种或多种碱土金属形成。 激活剂例如Eu2'或Mn2'掺杂到基体晶格中。 发光体具有吸收第一波长范围内的辐射的基本特性,并且在与第一波长范围不同的第二波长范围内发射辐射。 发光体以晶体的形式设计。 根据本发明,发光体的晶体的表面被化学改性,使得其表面的至少一部分由通式为EauZ2的化合物形成。 组分Z由阴离子形成,其可以与发光体的EA阳离子化学结合。 变量u等于阴离子Z的离子电荷。化学改性因此不是涂层。

    High lumen output fluorescent lamp with high color rendition

    公开(公告)号:US20050236959A1

    公开(公告)日:2005-10-27

    申请号:US10966436

    申请日:2004-10-15

    摘要: A high lumen output compact fluorescent lamp is disclosed that has a luminous efficiency of 40 lumen/W or higher. The fluorescent lamp comprises an envelope enclosing a discharge space, means for providing a discharge in the discharge space, a discharge gas sealed in the discharge space and a fluorescent layer made of a phosphor blend coated on the inner surface of the envelope. The phosphor blend comprises a, 55 to 80 weight % of a first phosphor having an emission band with a maximum between 620 nm and 635 nm and having a half-value width of 70 nm to 150 nm, b, 5 to 30 weight % of a second phosphor having an emission band with a maximum between 605 nm and 615 nm and having a half-value width of 1 nm to 10 nm, c, 0 to 20 weight % of a third phosphor having an emission band with a maximum between 540 nm and 550 nm and having a half-value width of 1 nm to 10 nm, and d, 0 to 30 weight % of a fourth phosphor having an emission band with a maximum between 480 nm and 500 nm and having a half-value width of 50 nm to 80 nm. The lamp havs an Ra value greater than 90 and a photographic color temperature between 3000 K and 3500 K. A lamp is also disclosed in which the phosphor blend comprises: a, 20 to 60 weight % of a first phosphor having an emission band with a maximum between 620 nm and 635 nm and having a half-value width of 70 nm to 150 nm, b, 20 to 65 weight % of a second phosphor having an emission band with a maximum between 480 nm and 500 nm and having a half-value width of 50 nm to 95 nm, c, 0 to 20 weight % of a third phosphor having an emission band with a maximum between 450 nm and 460 nm and having a half-value width of 40 nm to 65 nm and d, 0 to 30 weight % of a fourth phosphor having an emission band with a maximum between 610 nm and 630 nm and having a half-value width of 1 nm to 10 nm. This lamp has an Ra value greater than 90 and a photographic color temperature between 5000 K and 6000 K.

    Method for making small particle blue emitting lanthanum phosphate based
phosphors
    9.
    发明授权
    Method for making small particle blue emitting lanthanum phosphate based phosphors 失效
    制造小粒子蓝色发射磷酸镧系荧光体的方法

    公开(公告)号:US5989454A

    公开(公告)日:1999-11-23

    申请号:US110500

    申请日:1998-07-06

    CPC分类号: C09K11/7778 C09K11/7734

    摘要: Small particle lanthanum, thulium phosphate phosphors are produced by thermal decomposition of gels or solutions or powders including lanthanum, thulium, lithium and alkaline earth salts and an organic precursor such as trimethyl phosphate and boric acid at a temperature well below the normal temperature of solid state reaction. The phosphor of the present invention has the empirical formula:(La.sub.1-x-y-z Tm.sub.x Li.sub.y Sr.sub.z)PO.sub.4wherein: 0.001.ltoreq.x.ltoreq.0.05; 0.01.ltoreq.y.ltoreq.0.05; and 0.0.ltoreq.z.ltoreq.0.05and exhibits a narrow band emission in blue region, peaking at 453 nm when excited by 147 and 173 nm radiation from Xenon gas mixture. The phosphor exhibits uniform and spherical shape particles in the range 0.1 to 5 microns, and is appropriate for thin phosphor screens required for a variety of flat panel display and lamp applications. The particle size varies with method of preparation. The phosphors also exhibit high brightness, good color saturation, better stability and shorter persistence when excited with 147 and 173 nm radiation than the currently available commercial phosphor, Eu.sup.2+ actvated barium magnesium aluminate for plasma display panels.

    摘要翻译: 小颗粒镧,磷酸铋磷光体是通过凝胶或溶液或粉末包括镧,ium,锂和碱土金属盐以及有机前体如磷酸三甲酯和硼酸在远低于固态常温的温度下进行热分解制备的 反应。 本发明的荧光体具有以下经验式:(La1-x-y-z TmxLiySrz)PO4,其中0.001≤x≤0.05; 0.01

    Photostimulable storage phosphor and its use in radiography
    10.
    发明授权
    Photostimulable storage phosphor and its use in radiography 失效
    可照射的储存荧光粉及其在射线照相中的应用

    公开(公告)号:US5367176A

    公开(公告)日:1994-11-22

    申请号:US61522

    申请日:1993-05-17

    摘要: A photostimulable storage phosphor within the scope of following formula (I):M.sub.3 (PO.sub.4).sub.2 :xEu.sup.2+, yT.sup.3+, zZr.sup.4+wherein: M is at least one of the alkaline earth metals selected from the group consisting of Ca, Sr and Ba, x corresponds with an atom fraction value 5.times.10.sup.-5 .ltoreq..times..ltoreq.10.sup.-1, y corresponds with an atom fraction value 0.ltoreq.y.ltoreq.10.sup.-1, T.sup.3+ is at least one member selected from the group consisting of La.sup.3+, Lu.sup.3+, y.sup.3+ and Gd.sup.3+, z corresponds with an atom fraction value 0.ltoreq.z.ltoreq.10.sup.-1, and 5.times.10.sup.-5 .ltoreq.z+y.ltoreq.10.sup.-1.

    摘要翻译: 在下述通式(I)的范围内的可光激发储存荧光体:M3(PO4)2:xEu2 +,yT3 +,zZr4 +其中:M是选自Ca,Sr和Ba中的至少一种碱土金属, 对应于原子分数值5×10-5