376 results about "Phosphor" patented technology

A uranium-based phosphor selected from (i) phosphors having formula I or II:where the phosphor having formula I or II is doped with an activator ion including Pr3+, Sm3+, or mixtures thereof, where 0≤a≤1, 0≤b≤1, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25, 2.5≤p≤3.5, 1.75≤q≤2.25, and 3.5≤r≤4.5; (ii) a phosphor having formula I or II, where the phosphor having formula I or II is doped with an activator ion selected from Eu3+, Pr3+, Sm3+, and mixtures thereof; and a counter ion comprising one or more alkali metal ions; and (iii) phosphors having formula IIIwhere the phosphors having formula III are doped with an activator ion selected from: Eu3+, Pr3+, Sm3+, and mixtures thereof, where A is Li, Na, K, Rb, Cs, or a combination thereof.

To provide a photodetector capable of protecting a semiconductor photodetector element from reflected electrons generated inside a vacuum enclosure.SOLUTION: A photodetector 1 includes a vacuum housing 2 having a window 12, a photocathode (first photoelectric conversion layer) 3 that emits electrons E in response to incidence of light L1, a phosphor layer (second photoelectric conversion layer) 4 that generates light L2 in response to incidence of the electrons E emitted from the photocathode 3, and a semiconductor photodetector element 5 that is disposed on the opposite side of the photocathode 3 with the phosphor layer 4 in between and detects the light L2 generated in the phosphor layer 4. The semiconductor photodetector element 5 is disposed at a distance from the phosphor layer 4.SELECTED DRAWING: Figure 1

An alpha-sialon phosphor which is represented by general formula (Cax, Euy) (Si12-(m + n) Alm + n) (OnN16-n), and which has an average linear expansion coefficient (alpha ') at 25-900 DEG C of 4.2-4.6 ppm / DEG C (inclusive). In the general formula, 0 < x < 2.0, 0 < y < = 0.5, 0.3 < = x + y < = 2.0, 0 < m < = 4.0, and 0 < n < = 3.0.

The invention relates to a stimulus-response lasting phosphorescent material based on carboxymethyl chitosan and a preparation method and application thereof, the preparation method comprises the following steps: preparing a mixed solution: mixing purified carboxymethyl chitosan with pyrene-2, 7-dicarboxylic acid mother liquor dissolved by sodium hydroxide, and introducing acid to adjust the pH value to obtain the mixed solution; and preparing an afterglow film material: pouring the obtained mixed solution into a mold, and drying to obtain the stimulus-response-lasting phosphorescent material based on carboxymethyl chitosan. Compared with the prior art, the material disclosed by the invention is diversified in response dimension, wide in color change range, stable in luminescent property at normal temperature, free of inert gas or vacuum protection in a use process, good in actual operability and reusability, and suitable for customized development of personalized anti-counterfeiting ink; the material can also be used as a functional additive to be doped in hydrophilic macromolecules, and is used for intelligent information labels, wearable display fabrics, noctilucent art materials, flexible encryption coatings and other emerging application scenes.

An optical device includes a light-emitting element and an optical combiner. The light-emitting element is configured to emit a type of invisible light. The optical combiner is disposed in an optical path of the type of invisible light. The optical combiner includes a light-transmitting substrate and a series of phosphors. The series of phosphors are disposed on the light-transmitting substrate and are configured to be excited by the type of invisible light to emit a type of visible light.

A phosphor illumination system including a housing, a phosphor wheel, a condenser lens mounted to the housing, the condenser lens configured to condense light to an irradiation spot on the phosphor wheel and a flexure plate onto which the phosphor wheel is mounted. The flexure plate includes a fixed fastener for fixedly fastening the flexure plate to a first location of the housing and an adjustable fastener for adjustably fastening the flexure plate to a second location of the housing, the adjustable fastener configured to change at least one of a distance and an angle of the flexure plate with respect to the condenser lens as the adjustable fastener is tightened to or loosened from the housing.

Provided is a phosphor powder in which the balance of suitability, brightness, and excitation light blocking properties of a complex obtained from the phosphor powder with respect to a small-sized light-emitting device is improved. A phosphor powder containing SCASN phosphor particles, the phosphor powder having a volume-based median diameter (D50) of 0.1 [mu] m to 5.0 [mu] m (inclusive) as determined by a laser diffraction scattering method, and a peak wavelength of a fluorescence spectrum measured by a spectrophotometer when the phosphor powder is irradiated with light having a wavelength of 455 nm of 590.0 nm to 630.0 nm (inclusive), the absorption rate when the phosphor powder is irradiated with light having a wavelength of 455 nm is 80.0% or more.

This invention provides a hybrid ultraviolet and visible light source and its fabrication method. The method includes the following steps: providing a substrate, the substrate including a first region and a second region, the second region surrounding the first region; using a first mask to block the second region, and forming a first ohmic layer and a first N-type layer in the first region; using third, fourth, and fifth masks to form first, second, and third monochromatic light-emitting quantum well layers on the surface of the first N-type layer, respectively; using a second mask to form a first P-type layer, forming a white light source stacked structure; using a sixth mask to block the first region and forming an ultraviolet light source stacked structure in the second region; and simultaneously forming electrodes in both the white light source region and the ultraviolet light source region. The white light source for illumination proposed in the above technical solution does not contain phosphors or light-emitting quantum dots, and can extend its lifespan and reduce energy consumption when used in conjunction with an ultraviolet light source.

This invention provides a medical marker that offers excellent mounting stability, improved retention period, and superior visibility from the outside of tubular organs. [Solution] The medical marker 100 according to the present invention is a medical marker 100 that is implanted in a tubular organ in the body, and comprises a main body portion 120 extending in the longitudinal direction L, and two or more locking portions 150 that extend from a proximal end portion 151 fixed to a part of the distal side of the main body portion 120 to a tip portion 154. The locking portions 150 are configured to be deformable into a curved state in which they are curved laterally from the proximal end portion 151 so that the tip portion 154 is positioned proximal to the proximal end portion 151, and an extended state in which they extend in the longitudinal direction L from the proximal end portion 151. The main body portion 120 or the locking portions 150 are arranged with a phosphor containing a fluorescent dye that emits fluorescence in a predetermined wavelength range when irradiated with excitation light.

Disclosed herein is a methodology which quickly provides for the analysis of multiple luminescence decays from individual phosphor samples. The disclosed method utilizes a Trust-Region method to provide non-physical solutions when the fitting application was not provided with bounds for the respective intensities and decay times. Results from Double Decay were found to be statistically similar to data analyzed in methodologies known in the art.

A cathode-ray tube ultraviolet light source includes a metal housing provided with a light-transmissive window, a heatsink disposed within the metal housing, a phosphor having a first surface and an opposing second surface, wherein the second surface of the phosphor is in thermal contact with the heatsink, and an electron gun capable of developing an electron beam to impinge upon the first surface of the phosphor, whereby light emitted from the second surface of the phosphor is directed through the light-transmissive window.

A colored bilayer sub-ambient radiative cooling coating designed to enhance solar reflectance and aesthetic coloration is introduced. The coating includes a white bottom layer containing TiO2 or ZrO2 nanoparticles, and hollow glass spheres dispersed in a polymer matrix, and a colored top layer containing SiO2 microspheres and fluorescent pigments selected from Sr2Si5N8:Eu2+, Y3A15O12:Ce3+, (Ba,Sr)SiO4:Eu2+, or SrO·Al2O3:Eu phosphors dispersed in a polymer matrix. This bilayer structure achieves an effective solar reflectance of at least 90% and reduces surface temperature by at least 3° C. compared to ambient air, providing energy-efficient cooling with aesthetic appeal.

In an embodiment an optoelectronic component includes an active layer sequence configured to emit electromagnetic radiation of a primary wavelength and a ceramic converter element arranged in a beam path of the active layer sequence and configured to convert the primary wavelength at least partly into a secondary wavelength, wherein the ceramic converter element includes a quantum efficiency of at least 90%, a phosphor and a metal oxide powder, wherein the phosphor includes a doped garnet, wherein the ceramic converter element includes Ce and / or Gd doped Y3Al5O12 embedded in a matrix chosen from undoped Y3Al5O12 or undoped Y3Al5O12 and Al2O3, or Ce and / or Gd doped Lu3Al5O12 embedded in a matrix chosen from undoped Lu3Al5O12 or undoped Lu3Al5O12 and Al2O3, and wherein the phosphor and the metal oxide powder are free of second phases.

The present invention discloses a multi-component tunable polymer long afterglow luminescent material and its application. The polymer long afterglow luminescent material contains a multi-component polymer TPAP and can be applied to the field of light-emitting diodes. The present invention also discloses a preparation method of the polymer long afterglow luminescent material, firstly, a precursor PAA-NHS is synthesized by free radical copolymerization, and then a phosphorescent unit is introduced by decoupling of the PAA-NHS ester group amino. The obtained polymer film exhibits multi-color long-life room temperature phosphorescence at atmospheric room temperature. In addition, three phosphors are introduced simultaneously in the reaction, and a wide range of color-adjustable room temperature phosphorescence including white light can be achieved by adjusting the feed ratio. The present invention adopts a convenient one-pot reaction, the preparation method is simple and controllable, and has the advantages of low cost and easy acquisition of raw materials. It provides a new strategy and theoretical guidance for realizing long-life dynamic color-controlled afterglow in non-doped polymer systems, and also broadens the application of polymer long afterglow luminescent materials.

The invention provides a light-emitting device which is bright in both scotopic vision and photopic vision and reduces dazzling to people. The light-emitting device includes a light-emitting element having a dominant wavelength in the range of 430 nm to 500 nm, and a phosphor excited by light from the light-emitting element and having an emission peak wavelength in the range of 507 nm to 660 nm, and emits light having a dominant wavelength in the range of 490 nm to 500 nm. The S / P ratio, which is the ratio of the luminous flux in scotopic vision to the luminous flux in photopic vision, is 6.5 or less, and the luminous intensity at the luminous peak wavelength of the light-emitting element is higher than the luminous intensity at the luminous peak wavelength of the phosphor.

Provided is a glass that is used in a phosphor-containing wavelength conversion material and from which can be produced a wavelength conversion member less degraded in characteristics of a phosphor owing to firing during production of the wavelength conversion member and having excellent weather resistance. The glass is for use in a wavelength conversion material and contains, in terms of % by mass, 30 to 75% SiO2, 1 to 30% B2O3, over 4 to 20% Al2O3, 0.1 to 10% Li2O, 0 to below 9% Na2O+K2O, and 0 to 10% MgO+CaO+SrO+BaO+ZnO.

The utility model provides an LED packaging structure and an LED light-emitting device, and relates to the technical field of LEDs, the LED packaging structure comprises a transparent support, and the transparent support is provided with an accommodating groove; the light-emitting chip is arranged in the containing groove of the transparent support, and the light-emitting chip is in a long strip shape; the fluorescent glue layer covers the light-emitting chip, the fluorescent glue layer is in an oval shape, and the fluorescent glue layer does not make contact with the side wall of the containing groove; and the convex lens layer is arranged on the transparent bracket and covers the accommodating groove. The LED light-emitting device comprises the LED packaging structure. According to the LED packaging structure provided by the utility model, the problems of insufficient light emitting angle and non-uniform light emitting of the LED packaging structure in the prior art are solved.

Phosphor ink compositions and systems and methods for depositing such phosphor containing ink are disclosed. An ink composition of in accordance with the present disclosure comprises a phosphor material comprising a Mn4+ doped phosphor of Formula 1 Ax[MFy]:Mn4+ (I) and at least one binder material or solvent, wherein the Mn4+ doped phosphor has a D50 particle size from about 0.5 microns to about 15 microns, and wherein the ink composition has a viscosity from more than 2,000 cP to about 30,000 cP, where A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; and y is 5, 6 or 7.

To provide a phosphor wheel unit and a projection type image display device having improved cooling efficiency.SOLUTION: The phosphor wheel unit includes a phosphor wheel configured to emit fluorescent light from incident light, a motor configured to rotationally drive the phosphor wheel, a first heat exchanger having an airflow inlet surface on which a plurality of fins are arranged and into which a part or all of an airflow generated by rotation of the phosphor wheel flows, and a restriction member configured to restrict a direction of the airflow generated by the rotation of the phosphor wheel. On a plane perpendicular to the direction in which the base 107f of the phosphor wheel extends, the angle between the direction of the airflow restricted by the restriction member and the direction perpendicular to the axis of rotation of the phosphor wheel is greater than or equal to 0 degrees but smaller than or equal to 45 degrees. The airflow inlet surface is disposed on the extension of the direction of the airflow restricted by the restriction member, and the gas cooled by the first heat exchanger returns to the phosphor wheel.SELECTED DRAWING: Figure 7

The invention provides a non-contact temperature measurement system and temperature measurement method based on an organic phosphorescent material, and aims to solve the technical problem that the environment temperature cannot be monitored based on phosphorescent emission wavelength displacement due to performance limitation of the existing organic phosphorescent material. According to the non-contact temperature measurement system based on the organic phosphorescent material provided by the invention, the organic phosphorescent temperature-sensitive film is innovatively adopted to carry out temperature sensing on an object to be measured, and the organic phosphorescent temperature-sensitive film is obtained by mixing phosphorescent guest molecules, etherified cellulose and water according to a certain proportion, heating and melting the mixture, coating the mixture on a substrate and drying the substrate. Reversible aldehyde acetal can occur between phosphorescent guest molecules and the etherified cellulose, so that the phosphorescent emission wavelength of the formed organic phosphorescent temperature-sensitive film is subjected to red shift along with temperature rise, and the phosphorescent emission wavelength of the organic phosphorescent temperature-sensitive film can be analyzed; and the visual two-dimensional distribution monitoring of the continuous temperature within the temperature range of 77K-150K can be quickly and accurately realized.

Provided is a wavelength conversion member manufacturing method and a wavelength conversion member including a sintered body having improved light-tightness of a surface other than a light incident surface and a light exit surface. A wavelength conversion member manufacturing method including a sintered body having a light incident surface, a light exit surface, and a light reflection surface different from the light incident surface and the light exit surface includes: a sintered body preparation step of preparing a sintered body including inorganic particle and phosphor particle; and a recess formation step of performing acid treatment on the sintered body to form a plurality of recesses in the light reflection surface of the sintered body.

A europium-doped β-sialon phosphor particle. When the element concentration of a Si atom on the surface portion of the particle that is obtained by analyzing a cross section of the phosphor particle by the energy dispersive X-ray analysis method is indicated by Ps [at %], and the element concentration of a Si atom near the center of the particle that is obtained by an analysis by the same method is indicated by Pc [at %], the Pc-Ps value is 3 at % or more.

A compound is described as having a triplet excited state and a singlet excited state; wherein the triplet excited state comprises a lowest energy triplet sublevel, a middle energy triplet sublevel, and a highest energy triplet sublevel; and wherein an energy separation between the highest energy triplet sublevel and the lowest energy triplet sublevel (ZFS) is greater than an energy separation between the singlet excited state and a the lowest energy triplet sublevel. Also described is a compound represented by the following Formula I. These compounds should find application as luminescent materials in organic light emitting diodes (OLEDs).

The application relates to the technical field of electronic materials, and discloses a fluorinated iridium complex, a preparation method and application thereof, and an organic photoelectric device. The fluorinated iridium complex has a structure shown in formula (I): R 1 is a C1-C13 alkyl substituent, R 2 is a C1-C13 alkyl substituent, and the substitution sites are the meta and para positions of a carbon atom of an isoquinoline phenyl linkage, X is an independently existing hydrogen atom, a fluorine atom or an alkyl substituent, wherein the alkyl substituent is a deuterated, partially deuterated or aryl-substituted alkyl group; the fluorinated iridium complex realizes high-efficiency supersaturation deep red light as a red phosphor material in an organic light-emitting device.

The application discloses a kind of Mn 4+ Activated fluorine (oxygen) oxide red fluorescent material and its preparation method;The application uses organic-inorganic hybrid fluoride manganese salt material as Mn 4+ Source preparation Mn 4+ Activated fluorine (oxygen) oxide red fluorescent material.The application uses organic-inorganic hybrid fluoride manganese salt material instead of all-inorganic fluoride manganese salt, manganese salt and permanganate as Mn 4+ Source, for preparing Mn 4+ Activated fluorine (oxygen) oxide red fluorescent material, significantly improve the luminescent efficiency of Mn 4+ Activated fluorine (oxygen) oxide red fluorescent material.

An alpha-type sialon phosphor powder in which the average circularity of alpha-type sialon phosphor particles having a circle-equivalent diameter of 3-80 [mu] m in the alpha-type sialon phosphor powder is 0.85-0.95, and the average aspect ratio of the alpha-type sialon phosphor particles having a circle-equivalent diameter of 3-80 [mu] m in the alpha-type sialon phosphor powder is 0.65-0.85.

The present invention discloses a cyclization strategy to induce an intrinsic long-life room temperature phosphorescent material, and further discloses a preparation method of the phosphorescent material, wherein the method prepares a functionalized phosphor by reacting a fluorene series derivative with 4-chloromethylstyrene; the functionalized phosphor is then subjected to free radical polymerization with methacrylic acid and acrylonitrile to graft the phosphor small molecules onto the polymer chain in the form of a covalent bond to prepare a PMI series intrinsic room temperature phosphorescent material; secondly, a rearrangement isomerization reaction of carboxyl and cyano groups occurs at high temperature to generate a six-membered imide ring, and the continuous cyclic structure on the polymer chain further enhances the rigid environment of the polymer matrix, thereby obtaining a polymer room temperature phosphorescent material with excellent luminous performance. The present invention adopts a convenient one-pot reaction, the preparation method is simple and controllable, and the cost is low and the raw materials are easily obtained, providing a new approach for designing new pure organic phosphorescent materials.

To provide a light source device capable of irradiating a phosphor element with laser light to emit fluorescent light that is high in intensity and approximately parallel.SOLUTION: A light flux from a laser array, in which laser elements are arranged vertically and horizontally, is converted into a beam with a uniform brightness distribution, and then split into a plurality of beams by a first lens array, which are each focused and each irradiate a plurality of points on one surface of a phosphor element. The phosphor element emits fluorescent light with Lambertian distribution from a plurality of points on the other surface. The second lens array converts the fluorescent light with Lambertian distribution emitted from the plurality of points into approximately parallel light.SELECTED DRAWING: Figure 3

The invention provides a light generating system (1000) comprising a first light generating device (110), a second light generating device (120), a luminescent material (200), a diffuser assembly (1700), optics (500), and a light exit (1090), wherein: (A) the first light generating device (110) is configured to generate first device light (111), and the second light generating device (120) is configured to generate second device light (121); (B) the luminescent material (200) is configured to convert at least part of second device light (121) into luminescent material light (201); (C) the diffuser assembly (1700) comprises a diffuser (710), a condenser optical element (730), and a collecting optical element (740); (D) the condenser optical element (730) is configured to provide a focused beam (731) comprising first device light (111) in an optical path to the diffuser (710); (E) the diffuser (710) is configured to provide a diffused beam (711) comprising first device light (111) in an optical path to the collecting optical element (740), wherein an optical axis (Oi) of the focused beam (731) comprising first device light (111) and an optical axis (OR) of the diffused beam (711) comprising first device light (111) have a mutual angle (β), wherein the mutual angle (β) is selected from the range of 80°≤β≤140°; (F) the collecting optical element (740) is configured in a light-receiving relationship with the diffuser (710); wherein the collecting optical element (740) is configured to provide a collimated diffused beam (741) comprising first device light (111) in an optical path to the light exit (1090); (G) the optics (500) comprise one or more redirection optical elements (505) configured to direct one or more of: (i) the first device light (111) in an optical path to the diffuser assembly (1700), (ii) the collimated diffused beam (741) comprising first device light (111) in an optical path to the light exit (1090), (iii) the second device light (121) in an optical path to the luminescent material (200), and (iv) the luminescent material light (201) in an optical path to the light exit (1090); and (H) the light generating system (1000) is configured to generate in a first operational mode of the light generating system (1000) system light (1001) comprising at least part of the collimated diffused beam (741) comprising first device light (111) and at least part of the luminescent material light.