摘要:
A raw material prepared by washing a phosphor powder containing a phosphor host material and an activator with an acid solution, followed by drying the washed powder, is heated within a thermal plasma at a temperature which permits partially melting the phosphor, followed by cooling and subsequently subjecting the resultant phosphor at 1200.degree. to 1700.degree. C., thereby manufacturing spherical phosphor particles having a concentration gradient in a radial direction.
摘要:
A projection cathode-ray tube for a projection video apparatus, comprising a green-emitting screen including a terbium-activated lanthanum oxychloride phosphor. The disclosed phosphor exhibits a luminance maximum at a minimum beam size, a property advantageous for producing a high-resolution image. The phosphor is chemically stable at high temperatures. The phosphor shows no substantial decrease in emission efficiency even at about 80.degree. C., and the emission luminance is twofold that of the prior art. The green-emitting screen is made by the steps of: (a) settling the terbium-activated lanthanum oxychloride phosphor onto the inner surface of a cathode-ray tube, wherein the phosphor is settled from a suspension comprising a solution of potassium water glass and barium nitrate, and wherein the ratio of the weight concentration of potassium water glass to barium nitrate is in the range between about 20 to about 35; and (b) removing the resulting supernatant.
摘要:
A thin film electroluminescence device is disclosed which comprises are electrode formed on a transparatent substrate, one dielectric layer formed on the electrode, an emitting layer containing Group IIIb-Vb compound as a host material and positive trivalent element ions added as a luminescence center to the host material, the other dielectric layer formed on the emitting layer, the other electrode provided on the other dielectric layer.
摘要:
According to the present invention there is provided a thermal barrier coating wherein multilayers of (I) a ZrO.sub.2 layer containing a luminous activator and stabilized by Y.sub.2 O.sub.3, CaO, MgO or a mixture thereof and (II) a ZrO.sub.2 layer containing a luminous activator different from that used in (I) and stabilized by Y.sub.2 O.sub.3, CaO, MgO or a mixture thereof, or a ZrO.sub.2 layer not containing a luminous activator and stablized by Y.sub.2 O.sub.3 are stacked, and the layers at least under an uppermost layer opposite to a base member to be protected have a total thickness sufficient for exhibiting a thermal barrier effect. The present invention has as its object to provide a thermal barrier coating which allows non-destructive testing to determine whether it has a thickness sufficient for themal barrier effect.
摘要翻译:根据本发明,提供了一种隔热涂层,其中(I)含有发光活化剂并由Y 2 O 3,CaO,MgO或其混合物稳定的ZrO 2层和(II)含有不同于 在(I)中使用并且由Y 2 O 3,CaO,MgO或其混合物或不含有发光活化剂并且由Y 2 O 3稳定的ZrO 2层稳定化的材料层叠,并且这些层至少在与基底材料相对的最上层 被保护的总厚度足以显示出热障效应。 本发明的目的是提供一种热障涂层,其允许非破坏性测试来确定其是否具有足以用于主要屏障效应的厚度。
摘要:
A ceramic scintillator comprises a sintered body of a lutetium oxysulfide phosphor containing at least one element selected from Pr, Tb and Eu as an activator. The sintered body of a lutetium oxysulfide phosphor contains 5 to 15 ppm of an alkali metal element and 5 to 40 ppm of phosphorus. Such a ceramic scintillator can sufficiently make use of the intrinsic characteristics of the lutetium oxysulfide phosphor and has good sensitivity in X-ray detection even when it is downsized.
摘要:
Disclosed is a phosphor suitable for use in a cathode-ray tube, a fluorescent lamp, a radiation intensifying screen, which comprises transparent spherical particles having an average particle size of 0.5 to 20 .mu.m and a ratio of the major diameter to the minor meter of individual particles in the range of 1.0 to 1.5, and ultrafine particles having a diameter of 0.2 .mu.m less in an amount of 5 wt % or less.
摘要:
A specific binding material labeled with an ultrafine inorganic phosphor 1 to 100 nm in particle size is disclosed The composition of the ultrafine inorganic phosphor is one of Ln.sub.2 O.sub.3 :Re, Ln.sub.2 O.sub.2 S:Re, ZnO, CaWO.sub.4, MO.xAl.sub.2 O.sub.3 :Eu, Zn.sub.2 SiO.sub.4 :Mn, and LaPO.sub.4 :Ce,Tb, wherein Ln represents at least one element selected from La, Gd, Lu, and Y, Re represents at least one element selected from lanthanide elements, M represents at least one element selected from alkali earth metals, and x represents a value from 0.5 to 15. This ultrafine inorganic phosphor is prepared by one of the following processes a process of evaporation in a gas including an RF thermal plasma process, dc plasma thermal spraying, sputtering, glass crystallization, a sol-gel process, precipitation including hydrothermal synthesis, and a spraying process. An antibody which reacts specifically with an antigen to be measured is labeled with this ultrafine inorganic phosphor and reacted with a specimen, and the unreacted material is removed. The antibody bound to the specimen is detected by quantitatively observing fluorescence emitted by the phosphor.
摘要翻译:公开了以超细无机荧光体1〜100nm标记的特定结合材料。超细无机荧光体的组成为Ln 2 O 3:Re,Ln 2 O 2 S:Re,ZnO,CaWO 4,MO x Al 2 O 3:Eu,Zn 2 SiO 4:Mn 和LaPO 4:Ce,Tb,其中Ln表示选自La,Gd,Lu和Y中的至少一种元素,Re表示选自镧系元素中的至少一种元素,M表示选自碱土金属的至少一种元素,和 x表示0.5至15的值。该超细无机磷光体通过以下方法之一制备包括RF热等离子体工艺,直流等离子体喷涂,溅射,玻璃结晶,溶胶 - 凝胶法在内的气体中的蒸发过程 ,包括水热合成的沉淀和喷雾过程。 用该超细无机荧光体标记与待测抗原特异性反应的抗体,并与样品反应,除去未反应物质。 通过定量观察由荧光体发出的荧光来检测与样品结合的抗体。
摘要:
A luminescent material for a mercury discharge lamp comprises a phosphor material including phosphor particles for emitting a luminous flux upon excitation by ultraviolet radiation at 254 nm and a protective layer continuously formed on the phosphor particle with at least one metal oxide selected from the group consisting of MgO, Y.sub.2 O.sub.3, La.sub.2 O.sub.3, Sm.sub.2 O.sub.3, Gd.sub.2 O.sub.3, Dy.sub.2 O.sub.3, Ho.sub.2 O.sub.3, Er.sub.2 O.sub.3, Yb.sub.2 O.sub.3, Lu.sub.2 O.sub.3, CaO, ZrO.sub.2, SrO, BaO, .alpha.-Al.sub.2 O.sub.3 and BeO. A mercury discharge lamp has a luminescent layer coated with the luminescent material on the wall of the light transmissive bulb thereof.
摘要:
A cathode-ray tube according to the present invention is provided with a phosphor screen comprising phosphors A, B, and C, wherein each of the phosphors A and B constitute 5 to 15% by weight and, the phosphor C constitutes 70 to 90% by weight. The phosphor A is a bluish white-emitting phosphor (Y.sub.1-x-y Gd.sub.x Tb.sub.y).sub.2 O.sub.2 S (0.ltoreq.X.ltoreq.0.999999 and 0.000001.ltoreq.Y.ltoreq.0.001), the phosphor B is at least one of a blue-emitting silver-activated hexagonal zinc sulfate (ZnS:Ag) phosphor, etc., and the phosphors C is a yellow-emitting phosphor (In.sub.1-p-r M.sub.p TB.sub.q Eu.sub.r BO.sub.3) (wherein M is at least one element selected from the group consisting of Sc, Lu, Y, Gd, and Ga, and p, q, and r satisfy 0.ltoreq.p.ltoreq.0.2, 0.0005.ltoreq.q.ltoreq.0.05, and 0.001.ltoreq.r.ltoreq.0.1). The cathode-ray tube of the present invention is a phosphor screen which is free from toxicity and has good flickering and brightness characteristics and high current dependence of brightness.
摘要:
A projection type green cathode ray tube (CRT) with improved brightness despite an increase in the temperature of the faceplate, a method for manufacturing a phosphor screen adopted therein, and a projection video device which utilizes the projection type green CRT. The phosphor screen of the CRT is formed of a cerium-activated calcium sulfide phosphor which contains 0.01 to 0.3 mol% of cerium. According to the method for manufacturing the phosphor screen, the cerium-activated calcium sulfide phosphor is precipitated in a 0.3 to 5% aqueous solution of water glass based on weight. The aqueous solution does not contain barium ions. The projection video device includes the green CRT, a red CRT having a phosphor screen which is formed of an europium-activated yttrium oxide phosphor, and a blue CRT having a phosphor screen which is formed of a silver-activated zinc sulfide phosphor. Brightness of images is improved and does not substantially change over time.