摘要:
A phosphor for use in a PDP, which is a compound represented by Formula 1 below and a PDP including a phosphor layer comprising the phosphor.
(Y 1-x-y Gd x Tb y )Al r Q 3-r (BO 3 ) 4 Formula 1
where 0 When the phosphor is used to form a green phosphor layer of a PDP, the luminance saturation problem of a conventional green phosphor can be overcome. In addition, a PDP including a phosphor layer comprising the phosphor has a wider color reproduction range and no reduction in luminance according to the mixing ratio of each phosphor contained in the phosphor compared with a conventional phosphor used in a PDP. Therefore, a PDP including a phosphor layer comprising the phosphor can have far superior image qualities.
摘要:
Die vorliegende Erfindung betrifft Verfahren zur Herstellung fluoreszenzfähiger, anorganischer Nanopartikel, wobei die Nanopartikel aus einem wenigstens einen Dotanden enthaltenden Wirtsmaterial bestehen. Durch die erfindungsgemäße Synthese mit organischen Lösungsmitteln kann eine wesentlich bessere Ausbeute erzielt werden als bei der Wassersynthese vom Stand der Technik. Gegenstände aller Art können vorteilhaft markiert und mittels automatisiertem Verfahren sicher anhand charakteristischer Emission authentifiziert werden. Weiter ist die Größenverteilung der hergestellten Nanopartikel enger, was eine nachträgliche größenselektive Trennung überflüssig macht.
摘要:
The invention relates to a method for producing fluorescent inorganic nanoparticles, whereby the nanoparticles are comprised of a host material containing at least one dopant. The inventive synthesis involving the use of organic solvents results in a significantly better yield than that achieved in prior art water synthesis. Articles of all types can be advantageously marked and, by using automated methods, can be reliably authenticated based on a characteristic emission. In addition, the size distribution of the produced nanoparticles is tighter thus rendering a subsequent separation according to size unnecessary.
摘要:
The present invention provides an oxide glass capable of exhibiting a long lasting afterglow and photostimulated phosphorescence, whereby energy can be accumulated by radiation excitation, for example, by Υ-rays, X-rays and/or UV-rays, and light emission can be continued for a time after the excitation has ceased. Furthermore, the long lasting afterglow and photostimulated luminescence oxide glass can be used not only as a phosphorescent material for nigh illumination or a night signal, but also as a material for confirming an infrared laser or controlling an optical axis, because it exhibits photostimulated luminescence by irradiation of infrared rays or visible rays. In addition, this glass is useful for recording or reproducing Υ-rays, X-rays or UV-rays images. The oxide glass has a constitutional composition comprising, at least, silicon (Si), boron (B), zinc (Zn) and oxygen (O), and further containing terbium (Tb) or manganese (Mn) as a phosphorescent agent.
摘要:
Monophase crystalline mixed borates having the formula: M(II)1-xEu(II)xM(III)pEu(III)qTb(III)rB9O16 wherein M(II) is at least one bivalent metal selected amongst barium, strontium, lead and calcium, it being understood that, in a given mixed borate, the lead and the calcium, together represent not more than 20% by moles based on the total number of moles of metals M(II); M(III) is a metal selected amongst lanthanum, gadolinium, yttrium, serium, lutetium and bismuth; x is a number higher or equal to zero and smaller than or equal to 0.2; p, q and r represent each a number which may vary from 0 to 1, it being understood that, for a given borate: one of the numbers x, q and r is different from zero; and the sum p + q + r equals 1; preparation method and luminescent composition containing them.
摘要:
La présente invention a pour objet une nouvelle composition destinée au marquage de documents. Elle concerne également le procède de vérification de l'authenticité dudit document. La composition de l'invention est caractérisée par le fait qu'elle comprend:
- une substance luminescente (A) susceptible, lorsqu'elle est excitée par un rayonnement de longueur d'onde inférieure à 400 nm, d'émettre une radiation ayant une longueur d'onde comprise entre 400 et 800 nm et - une substance luminescente dite anti-stokes (B) susceptible, lorsqu'elle est excitee par un rayonnement de longueur d'onde superieure à 800 nm, d'emettre une radiation ayant une longueur d'onde comprise entre 400 et 800 nm.
La vérification de l'authenticité du document peut se faire selon une detection visuelle ou photométrique.
摘要:
A phosphor for use in a PDP, which is a compound represented by Formula 1 below and a PDP including a phosphor layer comprising the phosphor.
Formula 1 (Y 1 x y Gd x Tb y )Al r Q 3 r (BO 3 ) 1
where 0 When the phosphor is used to form a green phosphor layer of a PDP, the luminance saturation problem of a conventional green phosphor can be overcome. In addition, a PDP including a phosphor layer comprising the phosphor has a wider color reproduction range and no reduction in luminance according to the mixing ratio of each phosphor contained in the phosphor compared with a conventional phosphor used in a PDP. Therefore, a PDP including a phosphor layer comprising the phosphor can have far superior image qualities.
摘要翻译:一种用于PDP的磷光体,其为由下述通式1表示的化合物和包括含荧光体的荧光体层的PDP。 ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒFormula 1€ƒ€ƒ€ƒ(Y 1 xy Gd x Tb y)Al r Q 3 r(BO 3)1其中0
摘要:
The invention relates to a method for producing fluorescent inorganic nanoparticles, whereby the nanoparticles are comprised of a host material containing at least one dopant. The inventive synthesis involving the use of organic solvents results in a significantly better yield than that achieved in prior art water synthesis. Articles of all types can be advantageously marked and, by using automated methods, can be reliably authenticated based on a characteristic emission. In addition, the size distribution of the produced nanoparticles is tighter thus rendering a subsequent separation according to size unnecessary.
摘要:
Phosphors for use in a color cathode ray tube and cathode ray tubes using the same are disclosed. Phosphors according to the present invention comprise aluminum borate as the host material and may be represented by the following general formulas: (Al₁ -x-y, Lnx, Tby) :nBO₃ wherein Ln is at least one element selected from the group consisting of Sc, Lu, La and Y, the phosphor being a green emitting phosphor; (Al₁ -a-b, Lna, Eub):mBO₃ wherein Ln is at least one element selected from the group consisting of Sc, Lu, La and Y,the phosphor being a red emitting phosphor; (Al₁ -p-q-r, Eup, Tbq, Mr):sBO₃ wherein M is at least one element selected from the group consisting of In, Ga and Sm, the phosphor being an orange emitting phosphor. Phosphors prepared according to the present invention are excellent in the color purity, the emission luminance, the deterioration characteristics and the chemical stability.