摘要:
La présente invention concerne des substances luminescentes et leur procédé de préparation. Les thiogallates alcalino-terreux activés par l'europium répondent à la formule générale:
Les luminophores selon l'invention sont utilisables dans les écrans cathodoluminescents mono et multichromes destinés à l'affichage et à la visualisation d'informations graphiques, alphanumériques ou autres.
摘要:
Fluosilicates de strontium hydratés luminescents répondant à la formule Sr 1-x Eu 2+ Si F s ,2 H20 dans laquelle 0 Ces matériaux luminescents sont en particulier utilisables dans les lampes à décharge pour produire de la lumière noire.
摘要:
A divalent europium activated barium fluorohalide phosphor having the formula (I): in which X is at least one halogen selected from the group consisting of Cl, Br and I; A is a fired product of a tetrafluoroboric acid compound; and x and y are numbers satisfying the conditions of 10 6 ≦×≦0.1 and 0
摘要翻译:具有式(I)的二价铕活化的钡氟卤化物荧光体:其中X为选自Cl,Br和I的至少一种氧原子的BaFX.xA:yEu 2(→) A是四氟硼酸化合物的焙烧产物; X和Y分别是满足条件10 = x = 0.1和0
摘要:
A divalent metal fluorohalide phosphor having a compositional formula: (wherein, M" is at least one member selected from the group consisting of beryllium, magnesium, calcium, strontium, zinc, and cadmium, X is at least one member selected from the group consisting of chlorine, bromine, and iodine, and a, x, y, and z are numbers satisfying the respective conditions 0.5≤a≤1.25, 0≤x≤1, 10 -6 ≤y≤2x10 1 , and 0 -1 , that when exposed to and allowed to absorb radiation or ionizing radiation, and subsequently excited with a light of 450 to 800nm of tube wave length, provides stimulated emission of light with heretofore unattainable high luminance. A radiation image storage panel is produced by depositing on a support a phosphor layer formed of the afore referred to phosphor.
摘要:
L'invention concerne de nouvelles substances luminescentes à base d'europium divalent émettant dans le bleu. Ces substances répondent à la formule: dans laquelle:
M représente Ba 1-β Srp ou Ba 1-β Ca β , β étant supérieur ou égal à 0 et inférieur ou égal à environ 0,1; a est supérieur à 0 et inférieur ou égal à environ 0,02; X représente Cl 1-γ Bry y étant supérieur ou égal à 0 et inférieur ou égal à environ 1.
Les luminophores selon l'invention sont utilisés dans les tubles fluorescents, dans la fabrication d'écrans renforçateurs de rayons X et dans les dispositifs de visualisation multichromes.
摘要:
In a method for producing a binderless Eu-doped CsBr-type storage phosphor screen from a combination of phosphor precursors in order to prepare a CsBr:Eu storage phosphor by vacuum depositing said CsBr:Eu phosphor on a substrate, wherein during a vacuum depositing step said substrate is kept at a temperature T, such that 50 °C ≤ T ≤ 300 °C and wherein said vacuum deposition proceeds in an Ar-atmosphere with an Ar-pressure of at most 3 Pa; during or after at least one of the said steps a radiation exposure treatment is given with energy from radiation sources emitting short ultraviolet radiation in the range from 150 nm to 300 nm with an energy of at least 10 mJ/mm 2 .
摘要:
A monochrome display cathode ray tube which comprises a white emitting fluorescent screen formed on a face plate facing an electron gun to emit cathode rays, said white emitting fluorescent screen being composed essentially of a phosphor mixture comprising from 40 to 70% by weight of a long after-glow red emitting europium-activated indium borate phosphor, from 10 to 40% by weight of a long after-glow green emitting manganese-activated zinc silicate phosphor and from 10 to 50% by weight of a long after-glow blue emitting silver-activated zinc sulfide phosphor.
摘要:
A divalent europium activated barium fluorohalide phosphor having the formula (I): in which X is at least one halogen selected from the group consisting of Cl, Br and I; A is at least one fired product of a hexafluoro compound selected from the group consisting of monovalent and divalent metal salts of hexafluoro silicic acid, hexafluoro titanic acid and hexafluoro zirconic acid; and x and y are numbers satisfying the conditions of 10 -6 ≦x≦0.1 and 0 A process for the preparation of the said phosphor is also disclosed.
摘要:
Light sources modified to provide enhanced perceived coloration of illuminated objects. Light sources as normally designed, without the present modification, have an envelope-enclosed source of radiations having appreciable emissions in the wavelength range of from 565 nm to 595 nm plus substantial emissions of visible radiations of wavelengths shorter than 565 nm. A phosphor is carried on the surrounding envelope and is operable to absorb radiations in the wavelength range of from 565 nm to 595 nm and to convert absorbed radiations to longer wavelength emission in the range of from 596 nm to 640 nm.
摘要:
In one embodiment of the invention, a marine article of the invention includes a phosphorescent phosphor. A particularly advantageous phosphorescent phosphor comprises MA12O4. As used herein, "M" is at least one cation selected from a group consisting of calcium, strontium, and barium. The phosphor comprises 0.001 % to 10 % of a europium activator, and 0.001 % to 10 % of at least one dopant selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, tin and bismuth as a co-activator, in terms of mol % relative to the metal element expressed by M. The phosphorescent marine article has an afterglow corresponding to a luminance of at least 0.3 mCd/m for at least 420 minutes.