Patent application number | Description | Published |
20080296503 | HIGH ENERGY RESOLUTION SCINTILLATORS HAVING HIGH LIGHT OUTPUT - A scintillator composition includes a matrix material, where the matrix material includes an alkaline earth metal and a lanthanide halide. The scintillator composition further includes an activator ion, where the activator ion is a trivalent ion. In one embodiment, the scintillator composition includes a matrix material represented by A | 12-04-2008 |
20090146065 | SCINTILLATOR MATERIALS BASED ON LANTHANIDE SILICATES OR LANTHANIDE PHOSPHATES, AND RELATED METHODS AND ARTICLES - A scintillator composition is described. The composition includes a matrix material in the form of a host lattice characterized by a 4f5d→4f optical transition under activation. The matrix material is based on certain lithium-lanthanide silicate compounds or alkali-lanthanide phosphate compounds. The composition also includes a praseodymium (Pr) activator for the matrix material. Radiation detectors which include crystal scintillators are also part of the present invention, as are methods for detecting high-energy radiation, using these devices. | 06-11-2009 |
20090152497 | PERSISTENT PHOSPHOR - A long-lived phosphor composition is provided, along with methods for making and using the composition. More specifically, in one embodiment, the phosphor comprises a material having a formula of A | 06-18-2009 |
20100136302 | ARTICLES USING PERSISTENT PHOSPHORS - An article of manufacture that comprises a structure that is a security system device (or portion thereof) or a fire system device (or portion), where a persistent phosphor and/or a persistent phosphor blend is either integrated in a coating on the structure; applied on the structure; or integrated in the structure, wherein the persistent phosphor comprises certain phosphors or phosphor blends. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims. | 06-03-2010 |
20100148658 | METHODS FOR PREPARATION OF NANOCRYSTALLINE RARE EARTH PHOSPHATES FOR LIGHTING APPLICATIONS - Disclosed here are methods for the preparation of optionally activated nanocrystalline rare earth phosphates. The optionally activated nanocrystalline rare earth phosphates may be used as one or more of quantum-splitting phosphor, visible-light emitting phosphor, vacuum-UV absorbing phosphor, and UV-emitting phosphor. Also disclosed herein are discharge lamps comprising the optionally activated nanocrystalline rare earth phosphates provided by these methods. | 06-17-2010 |
20110147660 | OXY-NITRIDE PYROSILICATE BASED PERSISTENT PHOSPHORS - A blue (Sr rich) or yellow (Ca rich) persistent phosphor composition is provided, along with methods for making and using the composition. More specifically, in one embodiment, the phosphor includes a material having a formula of A | 06-23-2011 |
20110147661 | NOVEL ALUMINOSILICATE BASED BLUE PERSISTENT PHOSPHORS - A blue persistent phosphor composition is provided, along with methods for making and using the composition. More specifically, in one embodiment, the phosphor includes a material having a formula of A | 06-23-2011 |
20110175029 | PERSISTENT PHOSPHOR - A persistent phosphor of formula I is provided, along with methods for making and using the phosphor: | 07-21-2011 |
20110206580 | RARE EARTH RECOVERY FROM FLUORESCENT MATERIAL AND ASSOCIATED METHOD - A method of recovering a rare earth constituent from a phosphor is presented. The method can include a number of steps (a) to (d). In step (a), the phosphor is fired with an alkali material under conditions sufficient to decompose the phosphor into a mixture of oxides. A residue containing rare earth oxides is extracted from the mixture in step (b). In step (c), the residue is treated to obtain a solution, which comprises rare earth constituents in salt form. Rare earth constituents are separated from the solution in step (d). | 08-25-2011 |
20110311823 | CORE SHELL PHOSPHOR AND METHOD OF MAKING THE SAME - A method of making a core-shell phosphor is provided. The method comprises mixing a lanthanum phosphate (LaPO | 12-22-2011 |
20120068592 | RARE EARTH DOPED LUMINESCENT MATERIAL - A luminescent material includes an aluminate phosphor of formula I A | 03-22-2012 |
20120153226 | WHITE PERSISTENT PHOSPHOR BLEND OR LAYERED STRUCTURE - This disclosure features a blend, or use together in at least two layers of an article of manufacture, of a first persistent phosphor, a second persistent phosphor and a third phosphor. The first persistent phosphor has a formula I: | 06-21-2012 |
20120153227 | WHITE EMITTING PERSISTENT PHOSPHOR - This disclosure features a persistent phosphor having the following formula I: | 06-21-2012 |
20130001471 | CORE-SHELL PHOSPHOR AND METHOD OF MAKING THE SAME - In accordance with one aspect of the present invention, a core-shell phosphor composition is provided that includes a core comprising at least one material selected from the group consisting of aluminum phosphate, gallium phosphate, calcium phosphate, magnesium phosphate, zinc phosphate and boron phosphate; and a shell at least partially enclosing the core, wherein the shell comprises a shell material having formula (I) | 01-03-2013 |
20130002123 | GREEN EMITTING PHOSPHOR - Cerium, gadolinium and terbium doped aluminum phosphates of formula I may be used in fluorescent lamps | 01-03-2013 |
20130020928 | PHOSPHOR PRECURSOR COMPOSITION - In accordance with one aspect of the present invention, a phosphor precursor composition is provided. The phosphor precursor composition includes gamma alumina, strontium oxide precursor, europium oxide precursor, and an alkaline earth metal precursor other than strontium oxide precursor which affords a phosphor having a formula selected from the group consisting of Sr | 01-24-2013 |
20130082207 | CORE-SHELL PHOSPHOR AND METHOD OF MAKING THE SAME - In accordance with one aspect of the present invention, a core−shell phosphor composition is provided that includes a core comprising magnesium oxide; and a shell at least partially enclosing the core, wherein the shell comprises a shell material having formula (I) | 04-04-2013 |
20130126741 | Ce3+ ACTIVATED MIXED HALIDE ELPASOLITES AND HIGH ENERGY RESOLUTION SCINTILLATOR - A scintillator composition is described. The scintillator composition includes a matrix material and an activator. The matrix material includes at least one alkali metal or thallium; at least one alkali metal, different than the previously selected alkali metal; at least one lanthanides; and at least two halogens. The activator is cerium. Further, radiation detectors, which include the scintillator composition and methods for detecting high-energy radiation are also described and form part of this disclosure. | 05-23-2013 |
20130134863 | PHOSPHOR BLENDS FOR FLUORESCENT LAMPS - A phosphor blend suitable for use in a fluorescent lamp for emitting white light is disclosed. The phosphor blend includes a first phosphor, a second phosphor and a third phosphor. The first phosphor is selected from a europium doped barium magnesium aluminate, a europium doped strontium aluminate, and a combination thereof; and the second phosphor has formula Y | 05-30-2013 |
20130140978 | PHOSPHOR SYSTEM FOR IMPROVED EFFICACY LIGHTING SOURCES - Mercury vapor discharge fluorescent lamps are provided. The lamp can include a lamp envelope enclosing a discharge space and having an inner surface. First and second electrodes can be positioned on the lamp, such as on opposite ends of the lamp envelope. An ionizable medium that includes mercury and an inert gas can be within said lamp envelope. A phosphor layer can be on the inner surface of the lamp envelope. The phosphor layer generally includes a phosphor blend of a calcium halophosphor, a blue phosphor having an emission peak at about 440 nm to about 490 nm, a blue-green phosphor having an emission peak at about 475 nm to about 530 nm, and a red phosphor having an emission peak at about 600 nm to about 650 nm. | 06-06-2013 |
20140057110 | METHOD OF FORMING EFFICIENT PHOSPHOR POWDERS - A method of forming a phosphor composition is disclosed. The method includes mixing co-precipitated yttrium-europium oxalate with an inorganic flux material to form an oxalate-flux mixture; and heating the oxalate-flux mixture at a temperature in a range from about 800° C. to about 1400° C., to form the phosphor composition. The phosphor has a general formula of (Y | 02-27-2014 |